diff --git a/mozilla/widget/src/mac/nsMacWindow.h b/mozilla/widget/src/mac/nsMacWindow.h
index e7cf2326de5..e1f79f31ce8 100644
--- a/mozilla/widget/src/mac/nsMacWindow.h
+++ b/mozilla/widget/src/mac/nsMacWindow.h
@@ -18,9 +18,10 @@
 #ifndef MacWindow_h__
 #define MacWindow_h__
 
+#include <memory>	// for auto_ptr
+
 #include "nsWindow.h"
 #include "nsMacEventHandler.h"
-#include "memory"	// for auto_ptr
 
 class nsMacEventHandler;