diff --git a/mail/default/Makefile.am b/mail/default/Makefile.am
index 82be2bc415..1666acbced 100644
--- a/mail/default/Makefile.am
+++ b/mail/default/Makefile.am
@@ -1,4 +1,4 @@
 
-SUBDIRS=C
+SUBDIRS=C zh_CN