Jason Isaacs has a new interview with MTV and he confirms he filmed one day for Harry Potter and the Half-Blood Prince.

“I’m not [really] in the film [but] I did one day. I went in for a day. I’m a moving portrait on the wall.”

Jason confirmed his return as Lucius Malfoy for the final Deathly Hallows movies, which begin production next February.

Thanks Leaky!