diff --git a/packages/roosterjs-content-model-plugins/lib/shortcut/ShortcutPlugin.ts b/packages/roosterjs-content-model-plugins/lib/shortcut/ShortcutPlugin.ts
index 96987379992..b8d23493fab 100644
--- a/packages/roosterjs-content-model-plugins/lib/shortcut/ShortcutPlugin.ts
+++ b/packages/roosterjs-content-model-plugins/lib/shortcut/ShortcutPlugin.ts
@@ -119,7 +119,11 @@ export class ShortcutPlugin implements EditorPlugin {
     private cacheGetCommand(event: KeyDownEvent) {
         return cacheGetEventData(event, CommandCacheKey, event => {
             const editor = this.editor;
-
+            const { ctrlKey, metaKey } = event.rawEvent;
+            if (ctrlKey && metaKey) {
+                // We don't support both Ctrl and Meta key pressed at the same time.
+                return null;
+            }
             return (
                 editor &&
                 this.shortcuts.filter(
diff --git a/packages/roosterjs-content-model-plugins/lib/shortcut/shortcuts.ts b/packages/roosterjs-content-model-plugins/lib/shortcut/shortcuts.ts
index ffb004af755..ed1831e02d5 100644
--- a/packages/roosterjs-content-model-plugins/lib/shortcut/shortcuts.ts
+++ b/packages/roosterjs-content-model-plugins/lib/shortcut/shortcuts.ts
@@ -71,7 +71,7 @@ export const ShortcutUnderline: ShortcutCommand = {
 /**
  * Shortcut command for Clear Format
  * Windows: Ctrl + Space
- * MacOS: N/A
+ * MacOS: Meta + Space, this shortcut is the same as the default global spotlight shortcut, so it is invalid if the user keeps spotlight‘s.
  */
 export const ShortcutClearFormat: ShortcutCommand = {
     shortcutKey: {
@@ -80,7 +80,6 @@ export const ShortcutClearFormat: ShortcutCommand = {
         which: Keys.SPACE,
     },
     onClick: editor => clearFormat(editor),
-    environment: 'nonMac',
 };
 
 /**
diff --git a/packages/roosterjs-content-model-plugins/test/shortcut/ShortcutPluginTest.ts b/packages/roosterjs-content-model-plugins/test/shortcut/ShortcutPluginTest.ts
index bcb173ed278..f863627e71c 100644
--- a/packages/roosterjs-content-model-plugins/test/shortcut/ShortcutPluginTest.ts
+++ b/packages/roosterjs-content-model-plugins/test/shortcut/ShortcutPluginTest.ts
@@ -448,6 +448,26 @@ describe('ShortcutPlugin', () => {
             expect(apiSpy).toHaveBeenCalledWith(mockedEditor);
         });
 
+        it('clear format', () => {
+            const apiSpy = spyOn(clearFormat, 'clearFormat');
+            const plugin = new ShortcutPlugin();
+            const event: PluginEvent = {
+                eventType: 'keyDown',
+                rawEvent: createMockedEvent(Keys.SPACE, false, false, false, true),
+            };
+
+            plugin.initialize(mockedEditor);
+
+            const exclusively = plugin.willHandleEventExclusively(event);
+
+            expect(exclusively).toBeTrue();
+            expect(event.eventDataCache!.__ShortcutCommandCache).toBeDefined();
+
+            plugin.onPluginEvent(event);
+
+            expect(apiSpy).toHaveBeenCalledWith(mockedEditor);
+        });
+
         it('undo 1', () => {
             const apiSpy = spyOn(undo, 'undo');
             const plugin = new ShortcutPlugin();