diff --git a/src/proto/typval.pro b/src/proto/typval.pro
index c673db3..0c20339 100644
--- a/src/proto/typval.pro
+++ b/src/proto/typval.pro
@@ -25,10 +25,13 @@
 int check_for_job_arg(typval_T *args, int idx);
 int check_for_string_or_number_arg(typval_T *args, int idx);
 int check_for_buffer_arg(typval_T *args, int idx);
+int check_for_opt_buffer_arg(typval_T *args, int idx);
 int check_for_lnum_arg(typval_T *args, int idx);
 int check_for_opt_lnum_arg(typval_T *args, int idx);
 int check_for_opt_string_or_number_arg(typval_T *args, int idx);
 int check_for_string_or_blob_arg(typval_T *args, int idx);
+int check_for_string_or_list_arg(typval_T *args, int idx);
+int check_for_buffer_or_dict_arg(typval_T *args, int idx);
 char_u *tv_get_string(typval_T *varp);
 char_u *tv_get_string_strict(typval_T *varp);
 char_u *tv_get_string_buf(typval_T *varp, char_u *buf);