diff --git a/include/mruby.h b/include/mruby.h
index 6bc37b4273cd1b6ad03c875185de543772bb9df4..1107d9bc005056f53d042c54f5b267afdf6eae41 100644
--- a/include/mruby.h
+++ b/include/mruby.h
@@ -140,7 +140,6 @@ typedef struct mrb_state {
 } mrb_state;
 
 typedef mrb_value (*mrb_func_t)(mrb_state *mrb, mrb_value);
-typedef mrb_value (*mrb_funcargv_t)(mrb_state *mrb, mrb_value, int argc, mrb_value* argv);
 struct RClass *mrb_define_class(mrb_state *, const char*, struct RClass*);
 struct RClass *mrb_define_module(mrb_state *, const char*);
 mrb_value mrb_singleton_class(mrb_state*, mrb_value);