Hide him during a war

It was about a month ago when a man in Amsterdam felt that he needed to confess, so went to his priest: “Forgive me Father, for I have sinned. During WWII I hid a refugee in my attic.” “Well,” answered the priest, “that’s not a sin.” “But I made him agree to pay me 20 Gulden for every week he stayed.” “I admit that wasn’t good, but you did it for a good cause.” “Oh, thank you, Father; that eases my mind. I have one more question…” “What is that, my son?” “Do I have to tell him the war is over?”