diff --git a/mozilla/widget/src/mac/nsToolkit.h b/mozilla/widget/src/mac/nsToolkit.h
index ddbd287c25f..0803f1ad27a 100644
--- a/mozilla/widget/src/mac/nsToolkit.h
+++ b/mozilla/widget/src/mac/nsToolkit.h
@@ -55,7 +55,7 @@ class nsIEventQueueService;
  * event queue per nsToolkit.
  */
 
-#include "MacTypes.h"
+#include <MacTypes.h>
 
 class nsToolkit : public nsIToolkit
 {