diff --git a/src/proto/typval.pro b/src/proto/typval.pro
index b706183..90dcc54 100644
--- a/src/proto/typval.pro
+++ b/src/proto/typval.pro
@@ -18,7 +18,9 @@
 int check_for_opt_number_arg(typval_T *args, int idx);
 int check_for_float_or_nr_arg(typval_T *args, int idx);
 int check_for_bool_arg(typval_T *args, int idx);
+int check_for_bool_or_number_arg(typval_T *args, int idx);
 int check_for_opt_bool_arg(typval_T *args, int idx);
+int check_for_opt_bool_or_number_arg(typval_T *args, int idx);
 int check_for_blob_arg(typval_T *args, int idx);
 int check_for_list_arg(typval_T *args, int idx);
 int check_for_nonnull_list_arg(typval_T *args, int idx);