diff --git a/mozilla/modules/progress/public/pw_public.h b/mozilla/modules/progress/public/pw_public.h
index 92731135269..a5ac1932581 100644
--- a/mozilla/modules/progress/public/pw_public.h
+++ b/mozilla/modules/progress/public/pw_public.h
@@ -42,10 +42,10 @@ XP_BEGIN_PROTOS
 
 typedef void *  pw_ptr;
 
-typedef enum PW_WindowType {
+typedef enum _PW_WindowType {
 	pwApplicationModal,
 	pwStandard
-};
+} PW_WindowType;
 
 typedef void(*PW_CancelCallback) (void * closure);