diff --git a/mozilla/widget/src/windows/nsAppShell.cpp b/mozilla/widget/src/windows/nsAppShell.cpp
index bd71af2c56c..6442b76af98 100644
--- a/mozilla/widget/src/windows/nsAppShell.cpp
+++ b/mozilla/widget/src/windows/nsAppShell.cpp
@@ -63,7 +63,7 @@ NS_METHOD nsAppShell::SetDispatchListener(nsDispatchListener* aDispatchListener)
 //
 //-------------------------------------------------------------------------
 
-nsresult nsAppShell::Run()
+NS_METHOD nsAppShell::Run()
 {
   NS_ADDREF_THIS();
     // Process messages
diff --git a/mozilla/widget/src/windows/nsAppShell.h b/mozilla/widget/src/windows/nsAppShell.h
index db9994abb94..c93b2475992 100644
--- a/mozilla/widget/src/windows/nsAppShell.h
+++ b/mozilla/widget/src/windows/nsAppShell.h
@@ -38,7 +38,7 @@ class nsAppShell : public nsIAppShell
     // nsIAppShellInterface
   
     NS_IMETHOD            Create(int* argc, char ** argv);
-    virtual nsresult      Run(); 
+    NS_IMETHOD            Run(); 
     NS_IMETHOD            Spinup() { return NS_OK; }
     NS_IMETHOD            Spindown() { return NS_OK; }
     NS_IMETHOD            PushThreadEventQueue();