A faint smirk. Draco was pleased, very pleased. With an unregistered wand he could renew and strengthen the wards on the townhouse properly, without concern for questions asked by the Ministry why he did what he did. It was absurd that protecting one's home now looked suspicious. One eyebrow arched again. "I'm hardly an idiot, Potter. But thank you. It will be a pleasure to heat water for tea without the Ministry implying that I've decided to boil some poor sod's blood instead."
The smirk slipped to a smile. "Thank you." Honestly said, with a nod as well. "Are you ready to begin?"