updated 01/10/2012 AT 11:00 AM ET
•originally published 01/10/2012 AT 1:15 PM ET
The actor, 48, who previously told reporters he had an injured ACL (a ligament in the knee that connects the femur with the tibia), tells PEOPLE he’s doing just fine.
“It wasn’t life or death,” Pitt, who slipped down a hill while carrying 3-year-old daughter Vivienne, said at Monday’s New York Film Critics Circle Awards. “It was just an old man tripping.”