diff --git a/src/proto/vim9compile.pro b/src/proto/vim9compile.pro
index b7f7539..0790dec 100644
--- a/src/proto/vim9compile.pro
+++ b/src/proto/vim9compile.pro
@@ -2,8 +2,8 @@
 int lookup_local(char_u *name, size_t len, lvar_T *lvar, cctx_T *cctx);
 int arg_exists(char_u *name, size_t len, int *idxp, type_T **type, int *gen_load_outer, cctx_T *cctx);
 int script_is_vim9(void);
-int script_var_exists(char_u *name, size_t len, cctx_T *cctx);
-int check_defined(char_u *p, size_t len, cctx_T *cctx, int is_arg);
+int script_var_exists(char_u *name, size_t len, cctx_T *cctx, cstack_T *cstack);
+int check_defined(char_u *p, size_t len, cctx_T *cctx, cstack_T *cstack, int is_arg);
 int need_type_where(type_T *actual, type_T *expected, int offset, where_T where, cctx_T *cctx, int silent, int actual_is_const);
 int need_type(type_T *actual, type_T *expected, int offset, int arg_idx, cctx_T *cctx, int silent, int actual_is_const);
 lvar_T *reserve_local(cctx_T *cctx, char_u *name, size_t len, int isConst, type_T *type);