diff --git a/src/macos/macos_impl.rs b/src/macos/macos_impl.rs
index 539f1525..4ab860de 100644
--- a/src/macos/macos_impl.rs
+++ b/src/macos/macos_impl.rs
@@ -121,7 +121,6 @@ pub const kCFStringEncodingUTF8: u32 = 134_217_984;
 #[allow(improper_ctypes)]
 #[link(name = "Carbon", kind = "framework")]
 extern "C" {
-    fn TISCopyCurrentKeyboardInputSource() -> TISInputSourceRef;
     fn TISCopyCurrentKeyboardLayoutInputSource() -> TISInputSourceRef;
 
     //     extern void *
@@ -514,20 +513,16 @@ impl Enigo {
 
     #[allow(clippy::unused_self)]
     fn create_string_for_key(&self, keycode: u16, modifier: u32) -> CFStringRef {
-        let mut current_keyboard = unsafe { TISCopyCurrentKeyboardInputSource() };
-        let mut layout_data = unsafe {
+        // TISGetInputSourceProperty returns null when an input method is used as well.
+        // Using TISCopyCurrentKeyboardLayoutInputSource to fix NULL return.
+        // See also: https://github.com/microsoft/node-native-keymap/blob/089d802efd387df4dce1f0e31898c66e28b3f67f/src/keyboard_mac.mm#L90
+
+        let current_keyboard = unsafe { TISCopyCurrentKeyboardLayoutInputSource() };
+        let layout_data = unsafe {
             TISGetInputSourceProperty(current_keyboard, kTISPropertyUnicodeKeyLayoutData)
         };
-        if layout_data.is_null() {
-            // TISGetInputSourceProperty returns null with some keyboard layout.
-            // Using TISCopyCurrentKeyboardLayoutInputSource to fix NULL return.
-            // See also: https://github.com/microsoft/node-native-keymap/blob/089d802efd387df4dce1f0e31898c66e28b3f67f/src/keyboard_mac.mm#L90
-            current_keyboard = unsafe { TISCopyCurrentKeyboardLayoutInputSource() };
-            layout_data = unsafe {
-                TISGetInputSourceProperty(current_keyboard, kTISPropertyUnicodeKeyLayoutData)
-            };
-            debug_assert!(!layout_data.is_null());
-        }
+        assert!(!layout_data.is_null());
+
         let keyboard_layout = unsafe { CFDataGetBytePtr(layout_data) };
 
         let mut keys_down: UInt32 = 0;