diff --git a/mozilla/mailnews/local/public/makefile.win b/mozilla/mailnews/local/public/makefile.win
index 23108f73938..c5bfbcd1905 100644
--- a/mozilla/mailnews/local/public/makefile.win
+++ b/mozilla/mailnews/local/public/makefile.win
@@ -24,6 +24,7 @@ EXPORTS = \
 	nsIPop3URL.h				\
 	nsIMailboxUrl.h				\
 	nsIMailboxService.h			\
+	nsIPop3Service.h			\
 	$(NULL)
 
 MODULE=mailnews