diff --git a/xpfe/appshell/public/MANIFEST b/xpfe/appshell/public/MANIFEST
index d0b88d42cad..1bb94247bad 100644
--- a/xpfe/appshell/public/MANIFEST
+++ b/xpfe/appshell/public/MANIFEST
@@ -8,5 +8,5 @@ nsICmdLineService.h
 nsIWebShellWindow.h
 nsIWidgetController.h
 nsFileLocations.h
-nsXULWindowCallbacks.h
+nsIXULWindowCallbacks.h
 nsIDOMXPConnectFactory.h