diff -up atk-2.22.0/atk/atkgobjectaccessible.c.invalid-unref atk-2.22.0/atk/atkgobjectaccessible.c
--- atk-2.22.0/atk/atkgobjectaccessible.c.invalid-unref	2017-05-30 18:32:22.067833190 +0200
+++ atk-2.22.0/atk/atkgobjectaccessible.c	2017-05-30 18:32:43.864810009 +0200
@@ -163,7 +163,6 @@ atk_gobject_accessible_object_gone_cb (g
   g_object_set_qdata (G_OBJECT (data), quark_object, NULL);
   atk_object_notify_state_change (ATK_OBJECT (data), ATK_STATE_DEFUNCT,
                                   TRUE); 
-  g_object_unref (data);
 }
 
 static void