He had a hard time not smiling openly when Dumbledore discovered the locket to be a fake. Feeling generous, he reminded the man about Sirius younger brother and that the locket might be at Grimmauld Place. Surely Molly Weasley would know about it since she had cleaned the place up. He left it to them to discover that the desperately sought item had been thrown out like trash. With luck, that would send Dumbledore on a merry chase and keep him out of their hair for the foreseeable future.