1 files changed, 1 insertions, 1 deletions
diff --git a/gc.c b/gc.c
index c8ddd38509..04e87d38ef 100644
--- a/gc.c
+++ b/gc.c
@@ -3496,7 +3496,7 @@ Init_GC(void)
     OBJ_FREEZE(nomem_error);
 
     rb_define_method(rb_cBasicObject, "__id__", rb_obj_id, 0);
-    rb_define_method(rb_cBasicObject, "object_id", rb_obj_id, 0);
+    rb_define_method(rb_mKernel, "object_id", rb_obj_id, 0);
 
     rb_define_module_function(rb_mObSpace, "count_objects", count_objects, -1);