Lord Halewijn lays off his sword and starts to undress, which was the princess' plan. In some versions, while he is pulling his robe over his head, the cloth of the robe muffles the magical song. In other versions, as he pulls the robe over his head, he can no longer use his spellbinding gaze. Other versions have him turn his back to the princess while undressing. Whatever version however, while undressing, the princess awakens from his spell and cuts off the head of the now helpless Halewijn with his own sword.