diff --git a/crates/bevy_animation/src/transition.rs b/crates/bevy_animation/src/transition.rs
index 03c05f78c4531..f419f6e9c9dc1 100644
--- a/crates/bevy_animation/src/transition.rs
+++ b/crates/bevy_animation/src/transition.rs
@@ -5,9 +5,10 @@
 
 use bevy_ecs::{
     component::Component,
+    reflect::ReflectComponent,
     system::{Query, Res},
 };
-use bevy_reflect::Reflect;
+use bevy_reflect::{std_traits::ReflectDefault, Reflect};
 use bevy_time::Time;
 use bevy_utils::Duration;
 
@@ -28,6 +29,7 @@ use crate::{graph::AnimationNodeIndex, ActiveAnimation, AnimationPlayer};
 /// component to get confused about which animation is the "main" animation, and
 /// transitions will usually be incorrect as a result.
 #[derive(Component, Default, Reflect)]
+#[reflect(Component, Default)]
 pub struct AnimationTransitions {
     main_animation: Option<AnimationNodeIndex>,
     transitions: Vec<AnimationTransition>,
diff --git a/crates/bevy_ecs/src/world/component_constants.rs b/crates/bevy_ecs/src/world/component_constants.rs
index 00dee013081c4..28103c02379e0 100644
--- a/crates/bevy_ecs/src/world/component_constants.rs
+++ b/crates/bevy_ecs/src/world/component_constants.rs
@@ -1,5 +1,7 @@
 use super::*;
 use crate::{self as bevy_ecs};
+#[cfg(feature = "bevy_reflect")]
+use bevy_reflect::Reflect;
 /// Internal components used by bevy with a fixed component id.
 /// Constants are used to skip [`TypeId`] lookups in hot paths.
 
@@ -12,12 +14,15 @@ pub const ON_REMOVE: ComponentId = ComponentId::new(2);
 
 /// Trigger emitted when a component is added to an entity.
 #[derive(Event)]
+#[cfg_attr(feature = "bevy_reflect", derive(Reflect))]
 pub struct OnAdd;
 
 /// Trigger emitted when a component is inserted onto an entity.
 #[derive(Event)]
+#[cfg_attr(feature = "bevy_reflect", derive(Reflect))]
 pub struct OnInsert;
 
 /// Trigger emitted when a component is removed from an entity.
 #[derive(Event)]
+#[cfg_attr(feature = "bevy_reflect", derive(Reflect))]
 pub struct OnRemove;
diff --git a/crates/bevy_ui/src/ui_node.rs b/crates/bevy_ui/src/ui_node.rs
index 5e918e4d1ca8e..8aad2fb8305d1 100644
--- a/crates/bevy_ui/src/ui_node.rs
+++ b/crates/bevy_ui/src/ui_node.rs
@@ -1988,7 +1988,7 @@ impl Default for ZIndex {
 ///
 /// <https://developer.mozilla.org/en-US/docs/Web/CSS/border-radius>
 #[derive(Component, Copy, Clone, Debug, PartialEq, Reflect)]
-#[reflect(PartialEq, Default)]
+#[reflect(Component, PartialEq, Default)]
 #[cfg_attr(
     feature = "serialize",
     derive(serde::Serialize, serde::Deserialize),