diff --git a/mozilla/layout/xul/base/src/nsTitledButtonFrame.cpp b/mozilla/layout/xul/base/src/nsTitledButtonFrame.cpp
index 3343437e4cb..cf692e53322 100644
--- a/mozilla/layout/xul/base/src/nsTitledButtonFrame.cpp
+++ b/mozilla/layout/xul/base/src/nsTitledButtonFrame.cpp
@@ -71,7 +71,6 @@
 #include "nsIDOMHTMLMapElement.h"
 #include "nsIStyleSet.h"
 #include "nsIStyleContext.h"
-#include "nsIPopUpMenu.h"
 
 #include "nsFormControlHelper.h"