diff --git a/src/proto/ex_docmd.pro b/src/proto/ex_docmd.pro
index 6ff1588..b92ce80 100644
--- a/src/proto/ex_docmd.pro
+++ b/src/proto/ex_docmd.pro
@@ -25,6 +25,7 @@
 char_u *get_user_cmd_complete(expand_T *xp, int idx);
 int parse_addr_type_arg(char_u *value, int vallen, long *argt, int *addr_type_arg);
 int parse_compl_arg(char_u *value, int vallen, int *complp, long *argt, char_u **compl_arg);
+int cmdcomplete_str_to_type(char_u *complete_str);
 void not_exiting(void);
 void tabpage_close(int forceit);
 void tabpage_close_other(tabpage_T *tp, int forceit);