diff --git a/src/proto/eval.pro b/src/proto/eval.pro
index c570fb4..d85ab2e 100644
--- a/src/proto/eval.pro
+++ b/src/proto/eval.pro
@@ -27,7 +27,8 @@
 void set_context_for_expression __ARGS((expand_T *xp, char_u *arg, cmdidx_T cmdidx));
 void ex_call __ARGS((exarg_T *eap));
 void ex_unlet __ARGS((exarg_T *eap));
-int do_unlet __ARGS((char_u *name));
+void ex_lockvar __ARGS((exarg_T *eap));
+int do_unlet __ARGS((char_u *name, int forceit));
 void del_menutrans_vars __ARGS((void));
 char_u *get_user_var_name __ARGS((expand_T *xp, int idx));
 char_u *get_function_name __ARGS((expand_T *xp, int idx));
@@ -42,7 +43,6 @@
 char_u *set_cmdarg __ARGS((exarg_T *eap, char_u *oldarg));
 char_u *get_var_value __ARGS((char_u *name));
 void new_script_vars __ARGS((scid_T id));
-void vars_init __ARGS((hashtab_T *ht));
 void init_var_dict __ARGS((dict_T *dict, dictitem_T *dict_var));
 void vars_clear __ARGS((hashtab_T *ht));
 void ex_echo __ARGS((exarg_T *eap));