diff --git a/mozilla/xpfe/appshell/public/makefile.win b/mozilla/xpfe/appshell/public/makefile.win
index 3dd19633944..5337a4f1c64 100644
--- a/mozilla/xpfe/appshell/public/makefile.win
+++ b/mozilla/xpfe/appshell/public/makefile.win
@@ -23,7 +23,7 @@ MODULE=raptor
 XPIDL_MODULE=appshell 
 
 XPIDLSRCS =                       \
-        nsIFileLocator.idl          \
+       .\ nsIFileLocator.idl      \
         $(NULL)
 
 EXPORTS =                         \