diff --git a/src/proto/eval.pro b/src/proto/eval.pro
index 96a2c6d..45b559d 100644
--- a/src/proto/eval.pro
+++ b/src/proto/eval.pro
@@ -73,7 +73,7 @@
 void ex_echohl(exarg_T *eap);
 int get_echo_attr(void);
 void ex_execute(exarg_T *eap);
-char_u *find_option_end(char_u **arg, int *opt_flags);
+char_u *find_option_end(char_u **arg, int *scope);
 void last_set_msg(sctx_T script_ctx);
 char_u *do_string_sub(char_u *str, char_u *pat, char_u *sub, typval_T *expr, char_u *flags);
 /* vim: set ft=c : */