diff --git a/src/proto/misc1.pro b/src/proto/misc1.pro
index feb968a..61b975f 100644
--- a/src/proto/misc1.pro
+++ b/src/proto/misc1.pro
@@ -55,6 +55,7 @@
 char_u *home_replace_save __ARGS((buf_T *buf, char_u *src));
 int fullpathcmp __ARGS((char_u *s1, char_u *s2, int checkname));
 char_u *gettail __ARGS((char_u *fname));
+char_u *gettail_sep __ARGS((char_u *fname));
 char_u *getnextcomp __ARGS((char_u *fname));
 char_u *get_past_head __ARGS((char_u *path));
 int vim_ispathsep __ARGS((int c));