diff --git a/mozilla/xpfe/appshell/public/makefile.win b/mozilla/xpfe/appshell/public/makefile.win
index d19f6413e5c..d8d0cb9fe28 100644
--- a/mozilla/xpfe/appshell/public/makefile.win
+++ b/mozilla/xpfe/appshell/public/makefile.win
@@ -27,6 +27,7 @@ EXPORTS =                         \
         nsIAppShellService.h      \
         nsICmdLineService.h	  \
         nsIWidgetController.h     \
+        nsIXULCommand.h      \
         $(NULL)
 
 include <$(DEPTH)\config\rules.mak>