diff --git a/mailnews/local/src/makefile.win b/mailnews/local/src/makefile.win
index 5bf799cc83e3..c6472445e88a 100644
--- a/mailnews/local/src/makefile.win
+++ b/mailnews/local/src/makefile.win
@@ -70,6 +70,7 @@ EXPORTS=				\
 	nsPop3Service.h		\
 	nsPop3IncomingServer.h	\
 	nsLocalMessage.h \
+	nsLocalMailFolder.h \
 	$(NULL)
 
 LCFLAGS = \