diff --git a/core/extension/gdextension.cpp b/core/extension/gdextension.cpp
index a4d4b9161e12..2a287a1816fe 100644
--- a/core/extension/gdextension.cpp
+++ b/core/extension/gdextension.cpp
@@ -776,7 +776,7 @@ void GDExtension::initialize_library(InitializationLevel p_level) {
 
 	level_initialized = int32_t(p_level);
 
-	ERR_FAIL_COND(initialization.initialize == nullptr);
+	ERR_FAIL_NULL(initialization.initialize);
 
 	initialization.initialize(initialization.userdata, GDExtensionInitializationLevel(p_level));
 }
diff --git a/core/io/file_access_zip.cpp b/core/io/file_access_zip.cpp
index d085c29728dc..dd4533241227 100644
--- a/core/io/file_access_zip.cpp
+++ b/core/io/file_access_zip.cpp
@@ -110,7 +110,7 @@ static void godot_free(voidpf opaque, voidpf address) {
 } // extern "C"
 
 void ZipArchive::close_handle(unzFile p_file) const {
-	ERR_FAIL_COND_MSG(!p_file, "Cannot close a file if none is open.");
+	ERR_FAIL_NULL_MSG(p_file, "Cannot close a file if none is open.");
 	unzCloseCurrentFile(p_file);
 	unzClose(p_file);
 }
@@ -136,7 +136,7 @@ unzFile ZipArchive::get_file_handle(String p_file) const {
 	io.free_mem = godot_free;
 
 	unzFile pkg = unzOpen2(packages[file.package].filename.utf8().get_data(), &io);
-	ERR_FAIL_COND_V_MSG(!pkg, nullptr, "Cannot open file '" + packages[file.package].filename + "'.");
+	ERR_FAIL_NULL_V_MSG(pkg, nullptr, "Cannot open file '" + packages[file.package].filename + "'.");
 	int unz_err = unzGoToFilePos(pkg, &file.file_pos);
 	if (unz_err != UNZ_OK || unzOpenCurrentFile(pkg) != UNZ_OK) {
 		unzClose(pkg);
@@ -168,7 +168,7 @@ bool ZipArchive::try_open_pack(const String &p_path, bool p_replace_files, uint6
 	io.zerror_file = godot_testerror;
 
 	unzFile zfile = unzOpen2(p_path.utf8().get_data(), &io);
-	ERR_FAIL_COND_V(!zfile, false);
+	ERR_FAIL_NULL_V(zfile, false);
 
 	unz_global_info64 gi;
 	int err = unzGetGlobalInfo64(zfile, &gi);
@@ -241,7 +241,7 @@ Error FileAccessZip::open_internal(const String &p_path, int p_mode_flags) {
 	ZipArchive *arch = ZipArchive::get_singleton();
 	ERR_FAIL_NULL_V(arch, FAILED);
 	zfile = arch->get_file_handle(p_path);
-	ERR_FAIL_COND_V(!zfile, FAILED);
+	ERR_FAIL_NULL_V(zfile, FAILED);
 
 	int err = unzGetCurrentFileInfo64(zfile, &file_info, nullptr, 0, nullptr, 0, nullptr, 0);
 	ERR_FAIL_COND_V(err != UNZ_OK, FAILED);
@@ -265,28 +265,28 @@ bool FileAccessZip::is_open() const {
 }
 
 void FileAccessZip::seek(uint64_t p_position) {
-	ERR_FAIL_COND(!zfile);
+	ERR_FAIL_NULL(zfile);
 
 	unzSeekCurrentFile(zfile, p_position);
 }
 
 void FileAccessZip::seek_end(int64_t p_position) {
-	ERR_FAIL_COND(!zfile);
+	ERR_FAIL_NULL(zfile);
 	unzSeekCurrentFile(zfile, get_length() + p_position);
 }
 
 uint64_t FileAccessZip::get_position() const {
-	ERR_FAIL_COND_V(!zfile, 0);
+	ERR_FAIL_NULL_V(zfile, 0);
 	return unztell(zfile);
 }
 
 uint64_t FileAccessZip::get_length() const {
-	ERR_FAIL_COND_V(!zfile, 0);
+	ERR_FAIL_NULL_V(zfile, 0);
 	return file_info.uncompressed_size;
 }
 
 bool FileAccessZip::eof_reached() const {
-	ERR_FAIL_COND_V(!zfile, true);
+	ERR_FAIL_NULL_V(zfile, true);
 
 	return at_eof;
 }
@@ -299,7 +299,7 @@ uint8_t FileAccessZip::get_8() const {
 
 uint64_t FileAccessZip::get_buffer(uint8_t *p_dst, uint64_t p_length) const {
 	ERR_FAIL_COND_V(!p_dst && p_length > 0, -1);
-	ERR_FAIL_COND_V(!zfile, -1);
+	ERR_FAIL_NULL_V(zfile, -1);
 
 	at_eof = unzeof(zfile);
 	if (at_eof) {
diff --git a/core/object/callable_method_pointer.h b/core/object/callable_method_pointer.h
index 2dbb7e468e43..db78b982e4f4 100644
--- a/core/object/callable_method_pointer.h
+++ b/core/object/callable_method_pointer.h
@@ -99,7 +99,7 @@ class CallableCustomMethodPointer : public CallableCustomMethodPointerBase {
 
 	virtual void call(const Variant **p_arguments, int p_argcount, Variant &r_return_value, Callable::CallError &r_call_error) const {
 #ifdef DEBUG_ENABLED
-		ERR_FAIL_COND_MSG(ObjectDB::get_instance(ObjectID(data.object_id)) == nullptr, "Invalid Object id '" + uitos(data.object_id) + "', can't call method.");
+		ERR_FAIL_NULL_MSG(ObjectDB::get_instance(ObjectID(data.object_id)), "Invalid Object id '" + uitos(data.object_id) + "', can't call method.");
 #endif
 		call_with_variant_args(data.instance, data.method, p_arguments, p_argcount, r_call_error);
 	}
@@ -154,7 +154,7 @@ class CallableCustomMethodPointerRet : public CallableCustomMethodPointerBase {
 
 	virtual void call(const Variant **p_arguments, int p_argcount, Variant &r_return_value, Callable::CallError &r_call_error) const {
 #ifdef DEBUG_ENABLED
-		ERR_FAIL_COND_MSG(ObjectDB::get_instance(ObjectID(data.object_id)) == nullptr, "Invalid Object id '" + uitos(data.object_id) + "', can't call method.");
+		ERR_FAIL_NULL_MSG(ObjectDB::get_instance(ObjectID(data.object_id)), "Invalid Object id '" + uitos(data.object_id) + "', can't call method.");
 #endif
 		call_with_variant_args_ret(data.instance, data.method, p_arguments, p_argcount, r_return_value, r_call_error);
 	}
@@ -209,7 +209,7 @@ class CallableCustomMethodPointerRetC : public CallableCustomMethodPointerBase {
 
 	virtual void call(const Variant **p_arguments, int p_argcount, Variant &r_return_value, Callable::CallError &r_call_error) const override {
 #ifdef DEBUG_ENABLED
-		ERR_FAIL_COND_MSG(ObjectDB::get_instance(ObjectID(data.object_id)) == nullptr, "Invalid Object id '" + uitos(data.object_id) + "', can't call method.");
+		ERR_FAIL_NULL_MSG(ObjectDB::get_instance(ObjectID(data.object_id)), "Invalid Object id '" + uitos(data.object_id) + "', can't call method.");
 #endif
 		call_with_variant_args_retc(data.instance, data.method, p_arguments, p_argcount, r_return_value, r_call_error);
 	}
diff --git a/core/variant/variant.cpp b/core/variant/variant.cpp
index 63ea3274ce84..09fb34e7c141 100644
--- a/core/variant/variant.cpp
+++ b/core/variant/variant.cpp
@@ -2117,7 +2117,7 @@ Variant::operator ::RID() const {
 	} else if (type == OBJECT && _get_obj().obj) {
 #ifdef DEBUG_ENABLED
 		if (EngineDebugger::is_active()) {
-			ERR_FAIL_COND_V_MSG(ObjectDB::get_instance(_get_obj().id) == nullptr, ::RID(), "Invalid pointer (object was freed).");
+			ERR_FAIL_NULL_V_MSG(ObjectDB::get_instance(_get_obj().id), ::RID(), "Invalid pointer (object was freed).");
 		}
 #endif
 		Callable::CallError ce;
diff --git a/drivers/gles3/rasterizer_canvas_gles3.cpp b/drivers/gles3/rasterizer_canvas_gles3.cpp
index 7fce06c13335..7aea1a18506c 100644
--- a/drivers/gles3/rasterizer_canvas_gles3.cpp
+++ b/drivers/gles3/rasterizer_canvas_gles3.cpp
@@ -1236,7 +1236,7 @@ void RasterizerCanvasGLES3::_record_item_commands(const Item *p_item, RID p_rend
 }
 
 void RasterizerCanvasGLES3::_render_batch(Light *p_lights, uint32_t p_index) {
-	ERR_FAIL_COND(!state.canvas_instance_batches[state.current_batch_index].command);
+	ERR_FAIL_NULL(state.canvas_instance_batches[state.current_batch_index].command);
 
 	// Used by Polygon and Mesh.
 	static const GLenum prim[5] = { GL_POINTS, GL_LINES, GL_LINE_STRIP, GL_TRIANGLES, GL_TRIANGLE_STRIP };
@@ -2157,7 +2157,7 @@ void RasterizerCanvasGLES3::_bind_canvas_texture(RID p_texture, RS::CanvasItemTe
 	GLES3::Texture *t = texture_storage->get_texture(p_texture);
 
 	if (t) {
-		ERR_FAIL_COND(!t->canvas_texture);
+		ERR_FAIL_NULL(t->canvas_texture);
 		ct = t->canvas_texture;
 		if (t->render_target) {
 			t->render_target->used_in_frame = true;
diff --git a/drivers/gles3/storage/material_storage.cpp b/drivers/gles3/storage/material_storage.cpp
index 016f55436859..a2728f854b4d 100644
--- a/drivers/gles3/storage/material_storage.cpp
+++ b/drivers/gles3/storage/material_storage.cpp
@@ -2396,7 +2396,7 @@ void MaterialStorage::material_set_shader(RID p_material, RID p_shader) {
 		return;
 	}
 
-	ERR_FAIL_COND(shader->data == nullptr);
+	ERR_FAIL_NULL(shader->data);
 
 	material->data = material_data_request_func[shader->mode](shader->data);
 	material->data->self = p_material;
diff --git a/drivers/unix/dir_access_unix.cpp b/drivers/unix/dir_access_unix.cpp
index a162f461036d..095991e27b7d 100644
--- a/drivers/unix/dir_access_unix.cpp
+++ b/drivers/unix/dir_access_unix.cpp
@@ -339,7 +339,7 @@ Error DirAccessUnix::change_dir(String p_dir) {
 	// prev_dir is the directory we are changing out of
 	String prev_dir;
 	char real_current_dir_name[2048];
-	ERR_FAIL_COND_V(getcwd(real_current_dir_name, 2048) == nullptr, ERR_BUG);
+	ERR_FAIL_NULL_V(getcwd(real_current_dir_name, 2048), ERR_BUG);
 	if (prev_dir.parse_utf8(real_current_dir_name) != OK) {
 		prev_dir = real_current_dir_name; //no utf8, maybe latin?
 	}
@@ -361,7 +361,7 @@ Error DirAccessUnix::change_dir(String p_dir) {
 
 	String base = _get_root_path();
 	if (!base.is_empty() && !try_dir.begins_with(base)) {
-		ERR_FAIL_COND_V(getcwd(real_current_dir_name, 2048) == nullptr, ERR_BUG);
+		ERR_FAIL_NULL_V(getcwd(real_current_dir_name, 2048), ERR_BUG);
 		String new_dir;
 		new_dir.parse_utf8(real_current_dir_name);
 
@@ -496,7 +496,7 @@ DirAccessUnix::DirAccessUnix() {
 
 	// set current directory to an absolute path of the current directory
 	char real_current_dir_name[2048];
-	ERR_FAIL_COND(getcwd(real_current_dir_name, 2048) == nullptr);
+	ERR_FAIL_NULL(getcwd(real_current_dir_name, 2048));
 	if (current_dir.parse_utf8(real_current_dir_name) != OK) {
 		current_dir = real_current_dir_name;
 	}
diff --git a/drivers/vulkan/vulkan_context.cpp b/drivers/vulkan/vulkan_context.cpp
index 5bf988afb2d2..890fd7277fd4 100644
--- a/drivers/vulkan/vulkan_context.cpp
+++ b/drivers/vulkan/vulkan_context.cpp
@@ -1487,7 +1487,7 @@ Error VulkanContext::_create_physical_device(VkSurfaceKHR p_surface) {
 #define GET_INSTANCE_PROC_ADDR(inst, entrypoint)                                            \
 	{                                                                                       \
 		fp##entrypoint = (PFN_vk##entrypoint)vkGetInstanceProcAddr(inst, "vk" #entrypoint); \
-		ERR_FAIL_COND_V_MSG(fp##entrypoint == nullptr, ERR_CANT_CREATE,                     \
+		ERR_FAIL_NULL_V_MSG(fp##entrypoint, ERR_CANT_CREATE,                                \
 				"vkGetInstanceProcAddr failed to find vk" #entrypoint);                     \
 	}
 
@@ -1689,7 +1689,7 @@ Error VulkanContext::_initialize_queues(VkSurfaceKHR p_surface) {
 		if (!g_gdpa)                                                                              \
 			g_gdpa = (PFN_vkGetDeviceProcAddr)vkGetInstanceProcAddr(inst, "vkGetDeviceProcAddr"); \
 		fp##entrypoint = (PFN_vk##entrypoint)g_gdpa(dev, "vk" #entrypoint);                       \
-		ERR_FAIL_COND_V_MSG(fp##entrypoint == nullptr, ERR_CANT_CREATE,                           \
+		ERR_FAIL_NULL_V_MSG(fp##entrypoint, ERR_CANT_CREATE,                                      \
 				"vkGetDeviceProcAddr failed to find vk" #entrypoint);                             \
 	}
 
diff --git a/editor/animation_track_editor.cpp b/editor/animation_track_editor.cpp
index 919e335d21d2..b5747819a397 100644
--- a/editor/animation_track_editor.cpp
+++ b/editor/animation_track_editor.cpp
@@ -3903,7 +3903,7 @@ void AnimationTrackEditor::insert_value_key(const String &p_property, const Vari
 	ERR_FAIL_NULL(root);
 	ERR_FAIL_COND(history->get_path_size() == 0);
 	Object *obj = ObjectDB::get_instance(history->get_path_object(0));
-	ERR_FAIL_COND(!Object::cast_to<Node>(obj));
+	ERR_FAIL_NULL(Object::cast_to<Node>(obj));
 
 	// Let's build a node path.
 	Node *node = Object::cast_to<Node>(obj);
diff --git a/editor/export/export_template_manager.cpp b/editor/export/export_template_manager.cpp
index 3a034c8dcc94..26ed7c46fbd9 100644
--- a/editor/export/export_template_manager.cpp
+++ b/editor/export/export_template_manager.cpp
@@ -686,7 +686,7 @@ Error ExportTemplateManager::install_android_template_from_file(const String &p_
 	zlib_filefunc_def io = zipio_create_io(&io_fa);
 
 	unzFile pkg = unzOpen2(p_file.utf8().get_data(), &io);
-	ERR_FAIL_COND_V_MSG(!pkg, ERR_CANT_OPEN, "Android sources not in ZIP format.");
+	ERR_FAIL_NULL_V_MSG(pkg, ERR_CANT_OPEN, "Android sources not in ZIP format.");
 
 	int ret = unzGoToFirstFile(pkg);
 	int total_files = 0;
diff --git a/editor/import/collada.cpp b/editor/import/collada.cpp
index d27b0aea4096..be63973ea7e4 100644
--- a/editor/import/collada.cpp
+++ b/editor/import/collada.cpp
@@ -2197,7 +2197,7 @@ bool Collada::_move_geometry_to_skeletons(VisualScene *p_vscene, Node *p_node, L
 			ERR_FAIL_COND_V(!state.scene_map.has(nodeid), false); //weird, it should have it...
 			NodeJoint *nj = dynamic_cast<NodeJoint *>(state.scene_map[nodeid]);
 			ERR_FAIL_NULL_V(nj, false);
-			ERR_FAIL_COND_V(!nj->owner, false); //weird, node should have a skeleton owner
+			ERR_FAIL_NULL_V(nj->owner, false); // Weird, node should have a skeleton owner.
 
 			NodeSkeleton *sk = nj->owner;
 
diff --git a/editor/import/resource_importer_shader_file.cpp b/editor/import/resource_importer_shader_file.cpp
index 1275e5b85aea..bde2e3d0bfcc 100644
--- a/editor/import/resource_importer_shader_file.cpp
+++ b/editor/import/resource_importer_shader_file.cpp
@@ -96,7 +96,7 @@ Error ResourceImporterShaderFile::import(const String &p_source_file, const Stri
 	Error err;
 	Ref<FileAccess> file = FileAccess::open(p_source_file, FileAccess::READ, &err);
 	ERR_FAIL_COND_V(err != OK, ERR_CANT_OPEN);
-	ERR_FAIL_COND_V(!file.operator->(), ERR_CANT_OPEN);
+	ERR_FAIL_COND_V(!file.is_valid(), ERR_CANT_OPEN);
 
 	String file_txt = file->get_as_utf8_string();
 	Ref<RDShaderFile> shader_file;
diff --git a/editor/plugins/script_text_editor.cpp b/editor/plugins/script_text_editor.cpp
index 20c4127c1d3b..3ba86aa65b63 100644
--- a/editor/plugins/script_text_editor.cpp
+++ b/editor/plugins/script_text_editor.cpp
@@ -779,7 +779,7 @@ void ScriptEditor::_update_modified_scripts_for_external_editor(Ref<Script> p_fo
 		return;
 	}
 
-	ERR_FAIL_COND(!get_tree());
+	ERR_FAIL_NULL(get_tree());
 
 	HashSet<Ref<Script>> scripts;
 
diff --git a/editor/plugins/skeleton_3d_editor_plugin.cpp b/editor/plugins/skeleton_3d_editor_plugin.cpp
index e6bb5532a322..20b91d8bfde0 100644
--- a/editor/plugins/skeleton_3d_editor_plugin.cpp
+++ b/editor/plugins/skeleton_3d_editor_plugin.cpp
@@ -363,7 +363,7 @@ void Skeleton3DEditor::pose_to_rest(const bool p_all_bones) {
 
 void Skeleton3DEditor::create_physical_skeleton() {
 	EditorUndoRedoManager *ur = EditorUndoRedoManager::get_singleton();
-	ERR_FAIL_COND(!get_tree());
+	ERR_FAIL_NULL(get_tree());
 	Node *owner = get_tree()->get_edited_scene_root();
 
 	const int bone_count = skeleton->get_bone_count();
diff --git a/editor/plugins/version_control_editor_plugin.cpp b/editor/plugins/version_control_editor_plugin.cpp
index afc929b54781..6bac62d86138 100644
--- a/editor/plugins/version_control_editor_plugin.cpp
+++ b/editor/plugins/version_control_editor_plugin.cpp
@@ -44,7 +44,7 @@
 #include "scene/gui/separator.h"
 
 #define CHECK_PLUGIN_INITIALIZED() \
-	ERR_FAIL_COND_MSG(!EditorVCSInterface::get_singleton(), "No VCS plugin is initialized. Select a Version Control Plugin from Project menu.");
+	ERR_FAIL_NULL_MSG(EditorVCSInterface::get_singleton(), "No VCS plugin is initialized. Select a Version Control Plugin from Project menu.");
 
 VersionControlEditorPlugin *VersionControlEditorPlugin::singleton = nullptr;
 
diff --git a/editor/project_manager.cpp b/editor/project_manager.cpp
index e7fe9a353c35..b04773d37196 100644
--- a/editor/project_manager.cpp
+++ b/editor/project_manager.cpp
@@ -397,7 +397,7 @@ void ProjectDialog::_nonempty_confirmation_ok_pressed() {
 }
 
 void ProjectDialog::_renderer_selected() {
-	ERR_FAIL_COND(!renderer_button_group->get_pressed_button());
+	ERR_FAIL_NULL(renderer_button_group->get_pressed_button());
 
 	String renderer_type = renderer_button_group->get_pressed_button()->get_meta(SNAME("rendering_method"));
 
diff --git a/editor/scene_tree_dock.cpp b/editor/scene_tree_dock.cpp
index e7727aec4bc0..31023bf74806 100644
--- a/editor/scene_tree_dock.cpp
+++ b/editor/scene_tree_dock.cpp
@@ -651,8 +651,8 @@ void SceneTreeDock::_tool_selected(int p_tool, bool p_confirm_override) {
 				Node *top_node = selection[i];
 				Node *bottom_node = selection[selection.size() - 1 - i];
 
-				ERR_FAIL_COND(!top_node->get_parent());
-				ERR_FAIL_COND(!bottom_node->get_parent());
+				ERR_FAIL_NULL(top_node->get_parent());
+				ERR_FAIL_NULL(bottom_node->get_parent());
 
 				int bottom_node_pos = bottom_node->get_index(false);
 				int top_node_pos_next = top_node->get_index(false) + (MOVING_DOWN ? 1 : -1);
diff --git a/modules/enet/enet_connection.cpp b/modules/enet/enet_connection.cpp
index 94473c76c024..1c4f51c665f3 100644
--- a/modules/enet/enet_connection.cpp
+++ b/modules/enet/enet_connection.cpp
@@ -252,7 +252,7 @@ int ENetConnection::get_max_channels() const {
 
 int ENetConnection::get_local_port() const {
 	ERR_FAIL_NULL_V_MSG(host, 0, "The ENetConnection instance isn't currently active.");
-	ERR_FAIL_COND_V_MSG(!(host->socket), 0, "The ENetConnection instance isn't currently bound");
+	ERR_FAIL_NULL_V_MSG(host->socket, 0, "The ENetConnection instance isn't currently bound.");
 	ENetAddress address;
 	ERR_FAIL_COND_V_MSG(enet_socket_get_address(host->socket, &address), 0, "Unable to get socket address");
 	return address.port;
@@ -344,7 +344,7 @@ void ENetConnection::_broadcast(int p_channel, PackedByteArray p_packet, int p_f
 
 void ENetConnection::socket_send(const String &p_address, int p_port, const PackedByteArray &p_packet) {
 	ERR_FAIL_NULL_MSG(host, "The ENetConnection instance isn't currently active.");
-	ERR_FAIL_COND_MSG(!(host->socket), "The ENetConnection instance isn't currently bound");
+	ERR_FAIL_NULL_MSG(host->socket, "The ENetConnection instance isn't currently bound.");
 	ERR_FAIL_COND_MSG(p_port < 1 || p_port > 65535, "The remote port number must be between 1 and 65535 (inclusive).");
 
 	IPAddress ip;
diff --git a/modules/gdscript/gdscript_parser.cpp b/modules/gdscript/gdscript_parser.cpp
index 057c2b49ab3b..2f0aa010a443 100644
--- a/modules/gdscript/gdscript_parser.cpp
+++ b/modules/gdscript/gdscript_parser.cpp
@@ -5410,7 +5410,7 @@ void GDScriptParser::TreePrinter::print_while(WhileNode *p_while) {
 }
 
 void GDScriptParser::TreePrinter::print_tree(const GDScriptParser &p_parser) {
-	ERR_FAIL_COND_MSG(p_parser.get_tree() == nullptr, "Parse the code before printing the parse tree.");
+	ERR_FAIL_NULL_MSG(p_parser.get_tree(), "Parse the code before printing the parse tree.");
 
 	if (p_parser.is_tool()) {
 		push_line("@tool");
diff --git a/modules/mono/managed_callable.cpp b/modules/mono/managed_callable.cpp
index faf3ae7b0453..c55c5d81115e 100644
--- a/modules/mono/managed_callable.cpp
+++ b/modules/mono/managed_callable.cpp
@@ -89,7 +89,7 @@ void ManagedCallable::call(const Variant **p_arguments, int p_argcount, Variant
 	r_call_error.error = Callable::CallError::CALL_ERROR_INVALID_METHOD; // Can't find anything better
 	r_return_value = Variant();
 
-	ERR_FAIL_COND(delegate_handle.value == nullptr);
+	ERR_FAIL_NULL(delegate_handle.value);
 
 	GDMonoCache::managed_callbacks.DelegateUtils_InvokeWithVariantArgs(
 			delegate_handle, trampoline, p_arguments, p_argcount, &r_return_value);
diff --git a/modules/openxr/util.h b/modules/openxr/util.h
index d95bc3bb8e47..7488b5cf8e96 100644
--- a/modules/openxr/util.h
+++ b/modules/openxr/util.h
@@ -61,13 +61,13 @@
 #define GDEXTENSION_INIT_XR_FUNC(name)                                                              \
 	do {                                                                                            \
 		name##_ptr = reinterpret_cast<PFN_##name>(get_openxr_api()->get_instance_proc_addr(#name)); \
-		ERR_FAIL_COND(name##_ptr == nullptr);                                                       \
+		ERR_FAIL_NULL(name##_ptr);                                                                  \
 	} while (0)
 
 #define GDEXTENSION_INIT_XR_FUNC_V(name)                                                            \
 	do {                                                                                            \
 		name##_ptr = reinterpret_cast<PFN_##name>(get_openxr_api()->get_instance_proc_addr(#name)); \
-		ERR_FAIL_COND_V(name##_ptr == nullptr, false);                                              \
+		ERR_FAIL_NULL_V(name##_ptr, false);                                                         \
 	} while (0)
 
 #define EXT_PROTO_XRRESULT_FUNC1(func_name, arg1_type, arg1)                    \
diff --git a/modules/text_server_adv/text_server_adv.cpp b/modules/text_server_adv/text_server_adv.cpp
index b605b29f8449..2e994f277d11 100644
--- a/modules/text_server_adv/text_server_adv.cpp
+++ b/modules/text_server_adv/text_server_adv.cpp
@@ -4084,7 +4084,7 @@ bool TextServerAdvanced::_shaped_text_add_string(const RID &p_shaped, const Stri
 
 	MutexLock lock(sd->mutex);
 	for (int i = 0; i < p_fonts.size(); i++) {
-		ERR_FAIL_COND_V(!_get_font_data(p_fonts[i]), false);
+		ERR_FAIL_NULL_V(_get_font_data(p_fonts[i]), false);
 	}
 
 	if (p_text.is_empty()) {
diff --git a/modules/text_server_fb/text_server_fb.cpp b/modules/text_server_fb/text_server_fb.cpp
index 0cfbf7f53039..2d2fe0879802 100644
--- a/modules/text_server_fb/text_server_fb.cpp
+++ b/modules/text_server_fb/text_server_fb.cpp
@@ -2939,7 +2939,7 @@ bool TextServerFallback::_shaped_text_add_string(const RID &p_shaped, const Stri
 	ERR_FAIL_COND_V(p_size <= 0, false);
 
 	for (int i = 0; i < p_fonts.size(); i++) {
-		ERR_FAIL_COND_V(!_get_font_data(p_fonts[i]), false);
+		ERR_FAIL_NULL_V(_get_font_data(p_fonts[i]), false);
 	}
 
 	if (p_text.is_empty()) {
diff --git a/platform/ios/display_server_ios.mm b/platform/ios/display_server_ios.mm
index 8508b67f1e72..2561c1c09574 100644
--- a/platform/ios/display_server_ios.mm
+++ b/platform/ios/display_server_ios.mm
@@ -317,37 +317,37 @@
 }
 
 bool DisplayServerIOS::tts_is_speaking() const {
-	ERR_FAIL_COND_V_MSG(!tts, false, "Enable the \"audio/general/text_to_speech\" project setting to use text-to-speech.");
+	ERR_FAIL_NULL_V_MSG(tts, false, "Enable the \"audio/general/text_to_speech\" project setting to use text-to-speech.");
 	return [tts isSpeaking];
 }
 
 bool DisplayServerIOS::tts_is_paused() const {
-	ERR_FAIL_COND_V_MSG(!tts, false, "Enable the \"audio/general/text_to_speech\" project setting to use text-to-speech.");
+	ERR_FAIL_NULL_V_MSG(tts, false, "Enable the \"audio/general/text_to_speech\" project setting to use text-to-speech.");
 	return [tts isPaused];
 }
 
 TypedArray<Dictionary> DisplayServerIOS::tts_get_voices() const {
-	ERR_FAIL_COND_V_MSG(!tts, TypedArray<Dictionary>(), "Enable the \"audio/general/text_to_speech\" project setting to use text-to-speech.");
+	ERR_FAIL_NULL_V_MSG(tts, TypedArray<Dictionary>(), "Enable the \"audio/general/text_to_speech\" project setting to use text-to-speech.");
 	return [tts getVoices];
 }
 
 void DisplayServerIOS::tts_speak(const String &p_text, const String &p_voice, int p_volume, float p_pitch, float p_rate, int p_utterance_id, bool p_interrupt) {
-	ERR_FAIL_COND_MSG(!tts, "Enable the \"audio/general/text_to_speech\" project setting to use text-to-speech.");
+	ERR_FAIL_NULL_MSG(tts, "Enable the \"audio/general/text_to_speech\" project setting to use text-to-speech.");
 	[tts speak:p_text voice:p_voice volume:p_volume pitch:p_pitch rate:p_rate utterance_id:p_utterance_id interrupt:p_interrupt];
 }
 
 void DisplayServerIOS::tts_pause() {
-	ERR_FAIL_COND_MSG(!tts, "Enable the \"audio/general/text_to_speech\" project setting to use text-to-speech.");
+	ERR_FAIL_NULL_MSG(tts, "Enable the \"audio/general/text_to_speech\" project setting to use text-to-speech.");
 	[tts pauseSpeaking];
 }
 
 void DisplayServerIOS::tts_resume() {
-	ERR_FAIL_COND_MSG(!tts, "Enable the \"audio/general/text_to_speech\" project setting to use text-to-speech.");
+	ERR_FAIL_NULL_MSG(tts, "Enable the \"audio/general/text_to_speech\" project setting to use text-to-speech.");
 	[tts resumeSpeaking];
 }
 
 void DisplayServerIOS::tts_stop() {
-	ERR_FAIL_COND_MSG(!tts, "Enable the \"audio/general/text_to_speech\" project setting to use text-to-speech.");
+	ERR_FAIL_NULL_MSG(tts, "Enable the \"audio/general/text_to_speech\" project setting to use text-to-speech.");
 	[tts stopSpeaking];
 }
 
diff --git a/platform/linuxbsd/x11/display_server_x11.cpp b/platform/linuxbsd/x11/display_server_x11.cpp
index 02a5208e1192..81e741d7e206 100644
--- a/platform/linuxbsd/x11/display_server_x11.cpp
+++ b/platform/linuxbsd/x11/display_server_x11.cpp
@@ -2874,7 +2874,7 @@ void DisplayServerX11::cursor_set_custom_image(const Ref<Resource> &p_cursor, Cu
 			*(cursor_image->pixels + index) = image->get_pixel(column_index, row_index).to_argb32();
 		}
 
-		ERR_FAIL_COND(cursor_image->pixels == nullptr);
+		ERR_FAIL_NULL(cursor_image->pixels);
 
 		// Save it for a further usage
 		cursors[p_shape] = XcursorImageLoadCursor(x11_display, cursor_image);
diff --git a/platform/macos/display_server_macos.mm b/platform/macos/display_server_macos.mm
index 0989e47b199d..b314f2fd4461 100644
--- a/platform/macos/display_server_macos.mm
+++ b/platform/macos/display_server_macos.mm
@@ -118,7 +118,7 @@
 		WindowData wd;
 
 		wd.window_delegate = [[GodotWindowDelegate alloc] init];
-		ERR_FAIL_COND_V_MSG(wd.window_delegate == nil, INVALID_WINDOW_ID, "Can't create a window delegate");
+		ERR_FAIL_NULL_V_MSG(wd.window_delegate, INVALID_WINDOW_ID, "Can't create a window delegate");
 		[wd.window_delegate setWindowID:window_id_counter];
 
 		int rq_screen = get_screen_from_rect(p_rect);
@@ -144,11 +144,11 @@
 						  styleMask:NSWindowStyleMaskTitled | NSWindowStyleMaskClosable | NSWindowStyleMaskMiniaturizable | NSWindowStyleMaskResizable
 							backing:NSBackingStoreBuffered
 							  defer:NO];
-		ERR_FAIL_COND_V_MSG(wd.window_object == nil, INVALID_WINDOW_ID, "Can't create a window");
+		ERR_FAIL_NULL_V_MSG(wd.window_object, INVALID_WINDOW_ID, "Can't create a window");
 		[wd.window_object setWindowID:window_id_counter];
 
 		wd.window_view = [[GodotContentView alloc] init];
-		ERR_FAIL_COND_V_MSG(wd.window_view == nil, INVALID_WINDOW_ID, "Can't create a window view");
+		ERR_FAIL_NULL_V_MSG(wd.window_view, INVALID_WINDOW_ID, "Can't create a window view");
 		[wd.window_view setWindowID:window_id_counter];
 		[wd.window_view setWantsLayer:TRUE];
 
@@ -567,7 +567,7 @@
 					  colorSpaceName:NSDeviceRGBColorSpace
 						 bytesPerRow:int(p_image->get_width()) * 4
 						bitsPerPixel:32];
-	ERR_FAIL_COND_V(imgrep == nil, nil);
+	ERR_FAIL_NULL_V(imgrep, nil);
 	uint8_t *pixels = [imgrep bitmapData];
 
 	int len = p_image->get_width() * p_image->get_height();
@@ -583,7 +583,7 @@
 	}
 
 	NSImage *nsimg = [[NSImage alloc] initWithSize:NSMakeSize(p_image->get_width(), p_image->get_height())];
-	ERR_FAIL_COND_V(nsimg == nil, nil);
+	ERR_FAIL_NULL_V(nsimg, nil);
 	[nsimg addRepresentation:imgrep];
 	return nsimg;
 }
@@ -1574,7 +1574,7 @@
 		NSMenuItem *menu_item = [menu itemAtIndex:p_idx];
 		if (menu_item) {
 			GodotMenuItem *obj = [menu_item representedObject];
-			ERR_FAIL_COND(!obj);
+			ERR_FAIL_NULL(obj);
 			obj->hover_callback = p_callback;
 		}
 	}
@@ -3858,7 +3858,7 @@ - (void)popupAction:(id)sender {
 							 bytesPerRow:int(texture_size.width) * 4
 							bitsPerPixel:32];
 
-		ERR_FAIL_COND(imgrep == nil);
+		ERR_FAIL_NULL(imgrep);
 		uint8_t *pixels = [imgrep bitmapData];
 
 		int len = int(texture_size.width * texture_size.height);
@@ -4124,7 +4124,7 @@ - (void)popupAction:(id)sender {
 						  colorSpaceName:NSDeviceRGBColorSpace
 							 bytesPerRow:img->get_width() * 4
 							bitsPerPixel:32];
-		ERR_FAIL_COND(imgrep == nil);
+		ERR_FAIL_NULL(imgrep);
 		uint8_t *pixels = [imgrep bitmapData];
 
 		int len = img->get_width() * img->get_height();
@@ -4140,7 +4140,7 @@ - (void)popupAction:(id)sender {
 		}
 
 		NSImage *nsimg = [[NSImage alloc] initWithSize:NSMakeSize(img->get_width(), img->get_height())];
-		ERR_FAIL_COND(nsimg == nil);
+		ERR_FAIL_NULL(nsimg);
 
 		[nsimg addRepresentation:imgrep];
 		[NSApp setApplicationIconImage:nsimg];
diff --git a/platform/macos/gl_manager_macos_legacy.mm b/platform/macos/gl_manager_macos_legacy.mm
index 3e5a96bffdcf..701de6df7895 100644
--- a/platform/macos/gl_manager_macos_legacy.mm
+++ b/platform/macos/gl_manager_macos_legacy.mm
@@ -50,10 +50,10 @@
 	};
 
 	NSOpenGLPixelFormat *pixel_format = [[NSOpenGLPixelFormat alloc] initWithAttributes:attributes];
-	ERR_FAIL_COND_V(pixel_format == nil, ERR_CANT_CREATE);
+	ERR_FAIL_NULL_V(pixel_format, ERR_CANT_CREATE);
 
 	win.context = [[NSOpenGLContext alloc] initWithFormat:pixel_format shareContext:shared_context];
-	ERR_FAIL_COND_V(win.context == nil, ERR_CANT_CREATE);
+	ERR_FAIL_NULL_V(win.context, ERR_CANT_CREATE);
 	if (shared_context == nullptr) {
 		shared_context = win.context;
 	}
diff --git a/platform/macos/os_macos.mm b/platform/macos/os_macos.mm
index 1b8ca0134d2c..29dff683d530 100644
--- a/platform/macos/os_macos.mm
+++ b/platform/macos/os_macos.mm
@@ -819,7 +819,7 @@
 	[NSApp finishLaunching];
 
 	id delegate = [[GodotApplicationDelegate alloc] init];
-	ERR_FAIL_COND(!delegate);
+	ERR_FAIL_NULL(delegate);
 	[NSApp setDelegate:delegate];
 
 	pre_wait_observer = CFRunLoopObserverCreate(kCFAllocatorDefault, kCFRunLoopBeforeWaiting, true, 0, &pre_wait_observer_cb, nullptr);
diff --git a/platform/web/javascript_bridge_singleton.cpp b/platform/web/javascript_bridge_singleton.cpp
index 1bb72456e8f9..5d2123cda813 100644
--- a/platform/web/javascript_bridge_singleton.cpp
+++ b/platform/web/javascript_bridge_singleton.cpp
@@ -163,7 +163,7 @@ void JavaScriptObjectImpl::_get_property_list(List<PropertyInfo> *p_list) const
 }
 
 void JavaScriptObjectImpl::_free_lock(void **p_lock, int p_type) {
-	ERR_FAIL_COND_MSG(*p_lock == nullptr, "No lock to free!");
+	ERR_FAIL_NULL_MSG(*p_lock, "No lock to free!");
 	const Variant::Type type = (Variant::Type)p_type;
 	switch (type) {
 		case Variant::STRING: {
diff --git a/scene/animation/animation_player.cpp b/scene/animation/animation_player.cpp
index 2d4f2cbceb96..b3285d4cfcf3 100644
--- a/scene/animation/animation_player.cpp
+++ b/scene/animation/animation_player.cpp
@@ -544,12 +544,12 @@ bool AnimationPlayer::is_valid() const {
 }
 
 double AnimationPlayer::get_current_animation_position() const {
-	ERR_FAIL_COND_V_MSG(!playback.current.from, 0, "AnimationPlayer has no current animation");
+	ERR_FAIL_NULL_V_MSG(playback.current.from, 0, "AnimationPlayer has no current animation.");
 	return playback.current.pos;
 }
 
 double AnimationPlayer::get_current_animation_length() const {
-	ERR_FAIL_COND_V_MSG(!playback.current.from, 0, "AnimationPlayer has no current animation");
+	ERR_FAIL_NULL_V_MSG(playback.current.from, 0, "AnimationPlayer has no current animation.");
 	return playback.current.from->animation->get_length();
 }
 
diff --git a/scene/gui/graph_element.cpp b/scene/gui/graph_element.cpp
index 5129fdd13587..7fa5b0ceec92 100644
--- a/scene/gui/graph_element.cpp
+++ b/scene/gui/graph_element.cpp
@@ -150,7 +150,7 @@ void GraphElement::gui_input(const Ref<InputEvent> &p_ev) {
 
 	Ref<InputEventMouseButton> mb = p_ev;
 	if (mb.is_valid()) {
-		ERR_FAIL_COND_MSG(get_parent_control() == nullptr, "GraphElement must be the child of a GraphEdit node.");
+		ERR_FAIL_NULL_MSG(get_parent_control(), "GraphElement must be the child of a GraphEdit node.");
 
 		if (mb->is_pressed() && mb->get_button_index() == MouseButton::LEFT) {
 			Vector2 mpos = mb->get_position();
diff --git a/scene/main/node.h b/scene/main/node.h
index 2a45b7013906..94c6893170b3 100644
--- a/scene/main/node.h
+++ b/scene/main/node.h
@@ -411,7 +411,7 @@ class Node : public Object {
 	Window *get_last_exclusive_window() const;
 
 	_FORCE_INLINE_ SceneTree *get_tree() const {
-		ERR_FAIL_COND_V(!data.tree, nullptr);
+		ERR_FAIL_NULL_V(data.tree, nullptr);
 		return data.tree;
 	}
 
diff --git a/scene/main/viewport.cpp b/scene/main/viewport.cpp
index 368fd8fae02c..2b28f21f5764 100644
--- a/scene/main/viewport.cpp
+++ b/scene/main/viewport.cpp
@@ -2734,7 +2734,7 @@ Viewport::SubWindowResize Viewport::_sub_window_get_resize_margin(Window *p_subw
 
 bool Viewport::_sub_windows_forward_input(const Ref<InputEvent> &p_event) {
 	if (gui.subwindow_drag != SUB_WINDOW_DRAG_DISABLED) {
-		ERR_FAIL_COND_V(gui.currently_dragged_subwindow == nullptr, false);
+		ERR_FAIL_NULL_V(gui.currently_dragged_subwindow, false);
 
 		Ref<InputEventMouseButton> mb = p_event;
 		if (mb.is_valid() && !mb->is_pressed() && mb->get_button_index() == MouseButton::LEFT) {
diff --git a/scene/main/window.cpp b/scene/main/window.cpp
index 71ec9b29c5dd..2c28dc31d608 100644
--- a/scene/main/window.cpp
+++ b/scene/main/window.cpp
@@ -779,7 +779,7 @@ void Window::set_visible(bool p_visible) {
 		return;
 	}
 
-	ERR_FAIL_COND_MSG(get_parent() == nullptr, "Can't change visibility of main window.");
+	ERR_FAIL_NULL_MSG(get_parent(), "Can't change visibility of main window.");
 
 	visible = p_visible;
 
diff --git a/scene/resources/skeleton_modification_2d_physicalbones.cpp b/scene/resources/skeleton_modification_2d_physicalbones.cpp
index 520b2ce48316..5a72eb6bd822 100644
--- a/scene/resources/skeleton_modification_2d_physicalbones.cpp
+++ b/scene/resources/skeleton_modification_2d_physicalbones.cpp
@@ -186,7 +186,7 @@ void SkeletonModification2DPhysicalBones::set_physical_bone_chain_length(int p_l
 
 void SkeletonModification2DPhysicalBones::fetch_physical_bones() {
 	ERR_FAIL_NULL_MSG(stack, "No modification stack found! Cannot fetch physical bones!");
-	ERR_FAIL_COND_MSG(!stack->skeleton, "No skeleton found! Cannot fetch physical bones!");
+	ERR_FAIL_NULL_MSG(stack->skeleton, "No skeleton found! Cannot fetch physical bones!");
 
 	physical_bone_chain.clear();
 
diff --git a/servers/physics_2d/godot_area_2d.cpp b/servers/physics_2d/godot_area_2d.cpp
index 4d2148aa07b4..95207fc0fe30 100644
--- a/servers/physics_2d/godot_area_2d.cpp
+++ b/servers/physics_2d/godot_area_2d.cpp
@@ -194,7 +194,7 @@ Variant GodotArea2D::get_param(PhysicsServer2D::AreaParameter p_param) const {
 }
 
 void GodotArea2D::_queue_monitor_update() {
-	ERR_FAIL_COND(!get_space());
+	ERR_FAIL_NULL(get_space());
 
 	if (!monitor_query_list.in_list()) {
 		get_space()->area_add_to_monitor_query_list(&monitor_query_list);
diff --git a/servers/physics_2d/godot_body_2d.cpp b/servers/physics_2d/godot_body_2d.cpp
index 4a7b4707682a..1bd2465c7aba 100644
--- a/servers/physics_2d/godot_body_2d.cpp
+++ b/servers/physics_2d/godot_body_2d.cpp
@@ -422,7 +422,7 @@ void GodotBody2D::integrate_forces(real_t p_step) {
 		return;
 	}
 
-	ERR_FAIL_COND(!get_space());
+	ERR_FAIL_NULL(get_space());
 
 	int ac = areas.size();
 
diff --git a/servers/physics_2d/godot_physics_server_2d.cpp b/servers/physics_2d/godot_physics_server_2d.cpp
index 112ba240b6f2..8df17992ea4e 100644
--- a/servers/physics_2d/godot_physics_server_2d.cpp
+++ b/servers/physics_2d/godot_physics_server_2d.cpp
@@ -994,7 +994,7 @@ void GodotPhysicsServer2D::body_set_pickable(RID p_body, bool p_pickable) {
 bool GodotPhysicsServer2D::body_test_motion(RID p_body, const MotionParameters &p_parameters, MotionResult *r_result) {
 	GodotBody2D *body = body_owner.get_or_null(p_body);
 	ERR_FAIL_NULL_V(body, false);
-	ERR_FAIL_COND_V(!body->get_space(), false);
+	ERR_FAIL_NULL_V(body->get_space(), false);
 	ERR_FAIL_COND_V(body->get_space()->is_locked(), false);
 
 	_update_shapes();
diff --git a/servers/physics_3d/godot_area_3d.cpp b/servers/physics_3d/godot_area_3d.cpp
index 5bf16aa6884f..ad5e85780327 100644
--- a/servers/physics_3d/godot_area_3d.cpp
+++ b/servers/physics_3d/godot_area_3d.cpp
@@ -223,7 +223,7 @@ Variant GodotArea3D::get_param(PhysicsServer3D::AreaParameter p_param) const {
 }
 
 void GodotArea3D::_queue_monitor_update() {
-	ERR_FAIL_COND(!get_space());
+	ERR_FAIL_NULL(get_space());
 
 	if (!monitor_query_list.in_list()) {
 		get_space()->area_add_to_monitor_query_list(&monitor_query_list);
diff --git a/servers/physics_3d/godot_body_3d.cpp b/servers/physics_3d/godot_body_3d.cpp
index 21d5e49828cb..aa2c55fb04a3 100644
--- a/servers/physics_3d/godot_body_3d.cpp
+++ b/servers/physics_3d/godot_body_3d.cpp
@@ -477,7 +477,7 @@ void GodotBody3D::integrate_forces(real_t p_step) {
 		return;
 	}
 
-	ERR_FAIL_COND(!get_space());
+	ERR_FAIL_NULL(get_space());
 
 	int ac = areas.size();
 
diff --git a/servers/physics_3d/godot_physics_server_3d.cpp b/servers/physics_3d/godot_physics_server_3d.cpp
index 4118a19f1084..8a7b4e0f07b1 100644
--- a/servers/physics_3d/godot_physics_server_3d.cpp
+++ b/servers/physics_3d/godot_physics_server_3d.cpp
@@ -912,7 +912,7 @@ void GodotPhysicsServer3D::body_set_ray_pickable(RID p_body, bool p_enable) {
 bool GodotPhysicsServer3D::body_test_motion(RID p_body, const MotionParameters &p_parameters, MotionResult *r_result) {
 	GodotBody3D *body = body_owner.get_or_null(p_body);
 	ERR_FAIL_NULL_V(body, false);
-	ERR_FAIL_COND_V(!body->get_space(), false);
+	ERR_FAIL_NULL_V(body->get_space(), false);
 	ERR_FAIL_COND_V(body->get_space()->is_locked(), false);
 
 	_update_shapes();
@@ -1225,7 +1225,7 @@ void GodotPhysicsServer3D::joint_make_pin(RID p_joint, RID p_body_A, const Vecto
 	ERR_FAIL_NULL(body_A);
 
 	if (!p_body_B.is_valid()) {
-		ERR_FAIL_COND(!body_A->get_space());
+		ERR_FAIL_NULL(body_A->get_space());
 		p_body_B = body_A->get_space()->get_static_global_body();
 	}
 
@@ -1297,7 +1297,7 @@ void GodotPhysicsServer3D::joint_make_hinge(RID p_joint, RID p_body_A, const Tra
 	ERR_FAIL_NULL(body_A);
 
 	if (!p_body_B.is_valid()) {
-		ERR_FAIL_COND(!body_A->get_space());
+		ERR_FAIL_NULL(body_A->get_space());
 		p_body_B = body_A->get_space()->get_static_global_body();
 	}
 
@@ -1321,7 +1321,7 @@ void GodotPhysicsServer3D::joint_make_hinge_simple(RID p_joint, RID p_body_A, co
 	ERR_FAIL_NULL(body_A);
 
 	if (!p_body_B.is_valid()) {
-		ERR_FAIL_COND(!body_A->get_space());
+		ERR_FAIL_NULL(body_A->get_space());
 		p_body_B = body_A->get_space()->get_static_global_body();
 	}
 
@@ -1422,7 +1422,7 @@ void GodotPhysicsServer3D::joint_make_slider(RID p_joint, RID p_body_A, const Tr
 	ERR_FAIL_NULL(body_A);
 
 	if (!p_body_B.is_valid()) {
-		ERR_FAIL_COND(!body_A->get_space());
+		ERR_FAIL_NULL(body_A->get_space());
 		p_body_B = body_A->get_space()->get_static_global_body();
 	}
 
@@ -1462,7 +1462,7 @@ void GodotPhysicsServer3D::joint_make_cone_twist(RID p_joint, RID p_body_A, cons
 	ERR_FAIL_NULL(body_A);
 
 	if (!p_body_B.is_valid()) {
-		ERR_FAIL_COND(!body_A->get_space());
+		ERR_FAIL_NULL(body_A->get_space());
 		p_body_B = body_A->get_space()->get_static_global_body();
 	}
 
@@ -1502,7 +1502,7 @@ void GodotPhysicsServer3D::joint_make_generic_6dof(RID p_joint, RID p_body_A, co
 	ERR_FAIL_NULL(body_A);
 
 	if (!p_body_B.is_valid()) {
-		ERR_FAIL_COND(!body_A->get_space());
+		ERR_FAIL_NULL(body_A->get_space());
 		p_body_B = body_A->get_space()->get_static_global_body();
 	}
 
diff --git a/servers/physics_3d/godot_soft_body_3d.cpp b/servers/physics_3d/godot_soft_body_3d.cpp
index 20b19ab24379..0c2b935554aa 100644
--- a/servers/physics_3d/godot_soft_body_3d.cpp
+++ b/servers/physics_3d/godot_soft_body_3d.cpp
@@ -967,7 +967,7 @@ Vector3 GodotSoftBody3D::_compute_area_windforce(const GodotArea3D *p_area, cons
 void GodotSoftBody3D::predict_motion(real_t p_delta) {
 	const real_t inv_delta = 1.0 / p_delta;
 
-	ERR_FAIL_COND(!get_space());
+	ERR_FAIL_NULL(get_space());
 
 	bool gravity_done = false;
 	Vector3 gravity;
diff --git a/servers/rendering/renderer_rd/storage_rd/material_storage.cpp b/servers/rendering/renderer_rd/storage_rd/material_storage.cpp
index 3bd35c53ccf6..2e8c9d7f8efd 100644
--- a/servers/rendering/renderer_rd/storage_rd/material_storage.cpp
+++ b/servers/rendering/renderer_rd/storage_rd/material_storage.cpp
@@ -2115,7 +2115,7 @@ void MaterialStorage::material_set_shader(RID p_material, RID p_shader) {
 		return;
 	}
 
-	ERR_FAIL_COND(shader->data == nullptr);
+	ERR_FAIL_NULL(shader->data);
 
 	material->data = material_data_request_func[shader->type](shader->data);
 	material->data->self = p_material;
diff --git a/servers/rendering/shader_language.cpp b/servers/rendering/shader_language.cpp
index 34ffc1e90f20..d4e2fee277e1 100644
--- a/servers/rendering/shader_language.cpp
+++ b/servers/rendering/shader_language.cpp
@@ -1377,7 +1377,7 @@ bool ShaderLanguage::_find_identifier(const BlockNode *p_block, bool p_allow_rea
 			if (p_allow_reassign) {
 				break;
 			}
-			ERR_FAIL_COND_V(!p_block->parent_block, false);
+			ERR_FAIL_NULL_V(p_block->parent_block, false);
 			p_block = p_block->parent_block;
 		}
 	}
diff --git a/thirdparty/enet/godot.cpp b/thirdparty/enet/godot.cpp
index 37239e8462b5..ecf0a7e6dd7e 100644
--- a/thirdparty/enet/godot.cpp
+++ b/thirdparty/enet/godot.cpp
@@ -458,7 +458,7 @@ int enet_host_dtls_client_setup(ENetHost *host, const char *p_for_hostname, void
 }
 
 void enet_host_refuse_new_connections(ENetHost *host, int p_refuse) {
-	ERR_FAIL_COND(!host->socket);
+	ERR_FAIL_NULL(host->socket);
 	((ENetGodotSocket *)host->socket)->set_refuse_new_connections(p_refuse);
 }