Falcons wide receiver Drake London was penalized after catching a touchdown pass in the final minute of Atlanta’s 22-21 victory in Philadelphia on Monday night for pretending to shoot in the air, a violation of a longstanding NFL rule that prohibits such gestures.

Coach Raheem Morris called wide receiver Drake London pretending to fire a gun, just over a week after the team honored victims of the shooting at Apalachee High School, “a mistake.”