diff --git a/layout/xul/base/src/nsIScrollbarListener.h b/layout/xul/base/src/nsIScrollbarListener.h
index da26ea151120..b5999b693866 100644
--- a/layout/xul/base/src/nsIScrollbarListener.h
+++ b/layout/xul/base/src/nsIScrollbarListener.h
@@ -34,7 +34,8 @@ public:
   
   NS_IMETHOD PositionChanged(PRInt32 aOldIndex, PRInt32 aNewIndex) = 0;
 
-  NS_IMETHOD Page() = 0;
+  NS_IMETHOD PagedUp() = 0;
+  NS_IMETHOD PagedDown() = 0;
 };
 
 #endif