1 files changed, 1 insertions, 1 deletions
diff --git a/object.c b/object.c
index 5c8bf62049..79358adae8 100644
--- a/object.c
+++ b/object.c
@@ -328,7 +328,7 @@ rb_obj_clone(VALUE obj)
         rb_raise(rb_eTypeError, "can't clone %s", rb_obj_classname(obj));
     }
     clone = rb_obj_alloc(rb_obj_class(obj));
-    RBASIC(clone)->flags &= (FL_TAINT);
+    RBASIC(clone)->flags &= (FL_TAINT|FL_PROMOTED0|FL_PROMOTED1);
     RBASIC(clone)->flags |= RBASIC(obj)->flags & ~(FL_PROMOTED0|FL_PROMOTED1|FL_FREEZE|FL_FINALIZE);
 
     singleton = rb_singleton_class_clone_and_attach(obj, clone);