diff --git a/src/proto/message.pro b/src/proto/message.pro
index d76182d..db09d85 100644
--- a/src/proto/message.pro
+++ b/src/proto/message.pro
@@ -5,6 +5,7 @@
 int msg_attr_keep __ARGS((char_u *s, int attr, int keep));
 char_u *msg_strtrunc __ARGS((char_u *s));
 void trunc_string __ARGS((char_u *s, char_u *buf, int room));
+void reset_last_sourcing __ARGS((void));
 void msg_source __ARGS((int attr));
 int emsg __ARGS((char_u *s));
 int emsg2 __ARGS((char_u *s, char_u *a1));