1 files changed, 1 insertions, 1 deletions
diff --git a/object.c b/object.c
index 4146586a21..3456e47f68 100644
--- a/object.c
+++ b/object.c
@@ -285,7 +285,7 @@ rb_obj_clone(VALUE obj)
     if (FL_TEST(singleton, FL_SINGLETON)) {
 	rb_singleton_class_attached(singleton, clone);
     }
-    RBASIC(clone)->flags = (RBASIC(obj)->flags | FL_TEST(clone, FL_TAINT) | FL_TEST(clone, FL_UNTRUSTED)) & ~(FL_FREEZE|FL_FINALIZE|FL_MARK);
+    RBASIC(clone)->flags = (RBASIC(obj)->flags | FL_TEST(clone, FL_TAINT) | FL_TEST(clone, FL_UNTRUSTED)) & ~(FL_FREEZE|FL_FINALIZE);
     init_copy(clone, obj);
     rb_funcall(clone, id_init_clone, 1, obj);
     RBASIC(clone)->flags |= RBASIC(obj)->flags & FL_FREEZE;