Working on `12 years a Slave` a privilege: Brad Pitt

Washington: Brad Pitt has admitted that working on `12 Years a Slave` was a privilege for him.

He added that if he never gets to participate in a film again, then this is it for him, Us Magazine reported.

Directed by Steve McQueen, the film is based on the true story of Solomon Northup, a free black man, who was abducted and sold into slavery in the pre-Civil War.