diff --git a/src/proto/ex_docmd.pro b/src/proto/ex_docmd.pro
index eba5ee4..7f5c691 100644
--- a/src/proto/ex_docmd.pro
+++ b/src/proto/ex_docmd.pro
@@ -7,7 +7,7 @@
 int parse_command_modifiers(exarg_T *eap, char **errormsg, int skip_only);
 int parse_cmd_address(exarg_T *eap, char **errormsg, int silent);
 int checkforcmd(char_u **pp, char *cmd, int len);
-char_u *find_ex_command(exarg_T *eap, int *full, int (*lookup)(char_u *, size_t, cctx_T *), cctx_T *cctx);
+char_u *find_ex_command(exarg_T *eap, int *full, void *((*lookup)(char_u *, size_t, cctx_T *)), cctx_T *cctx);
 int modifier_len(char_u *cmd);
 int cmd_exists(char_u *name);
 cmdidx_T excmd_get_cmdidx(char_u *cmd, int len);
@@ -19,7 +19,7 @@
 char_u *skip_cmd_arg(char_u *p, int rembs);
 int get_bad_opt(char_u *p, exarg_T *eap);
 int ends_excmd(int c);
-int ends_excmd2(char_u *before, char_u *cmd);
+int ends_excmd2(char_u *cmd_start, char_u *cmd);
 char_u *find_nextcmd(char_u *p);
 char_u *check_nextcmd(char_u *p);
 char_u *get_command_name(expand_T *xp, int idx);