diff --git a/mozilla/widget/src/mac/nsDynamicMDEF.cpp b/mozilla/widget/src/mac/nsDynamicMDEF.cpp
index 7e2b09d8a9a..11b8b1ef50e 100644
--- a/mozilla/widget/src/mac/nsDynamicMDEF.cpp
+++ b/mozilla/widget/src/mac/nsDynamicMDEF.cpp
@@ -32,7 +32,6 @@
 
 #include <Resources.h>
 #include <MixedMode.h>
-#include <A4Stuff.h>
   
 extern nsWeakPtr    gMacMenubar;
 extern Handle       gSystemMDEFHandle;