diff --git a/mozilla/widget/src/windows/nsWindow.h b/mozilla/widget/src/windows/nsWindow.h
index 74b3abd0da5..eb0dce9e745 100644
--- a/mozilla/widget/src/windows/nsWindow.h
+++ b/mozilla/widget/src/windows/nsWindow.h
@@ -35,7 +35,7 @@
 
 #include "nsVoidArray.h"
 
-#define DRAG_DROP
+//#define DRAG_DROP
 #ifdef DRAG_DROP
 class nsIDragTarget;
 class nsIDragSource;