1 files changed, 1 insertions, 4 deletions
diff --git a/vm.c b/vm.c
index 9137a4dc3a..7387656136 100644
--- a/vm.c
+++ b/vm.c
@@ -1858,10 +1858,7 @@ vm_define_method(rb_thread_t *th, VALUE obj, ID id, VALUE iseqval,
 		     rb_id2name(id), rb_obj_classname(obj));
 	}
 
-	if (OBJ_FROZEN(obj)) {
-	    rb_error_frozen("object");
-	}
-
+	rb_check_frozen(obj);
 	klass = rb_singleton_class(obj);
 	noex = NOEX_PUBLIC;
     }