diff --git a/src/proto/evalvars.pro b/src/proto/evalvars.pro
index 97641b5..eab82c8 100644
--- a/src/proto/evalvars.pro
+++ b/src/proto/evalvars.pro
@@ -16,7 +16,8 @@
 list_T *heredoc_get(exarg_T *eap, char_u *cmd, int script_get);
 void ex_let(exarg_T *eap);
 int ex_let_vars(char_u *arg_start, typval_T *tv, int copy, int semicolon, int var_count, int flags, char_u *op);
-char_u *skip_var_list(char_u *arg, int include_type, int *var_count, int *semicolon);
+char_u *skip_var_list(char_u *arg, int include_type, int *var_count, int *semicolon, int silent);
+char_u *skip_var_one(char_u *arg, int include_type);
 void list_hashtable_vars(hashtab_T *ht, char *prefix, int empty, int *first);
 void ex_unlet(exarg_T *eap);
 void ex_lockvar(exarg_T *eap);