Hector Bellerin thought he got to the ball at the same time as Eden Hazard during Arsenal's 2-2 draw with Chelsea.
However, referee Anthony Taylor disagreed and awarded Hazard a penalty.
Bellerin made up for it however, when he scored an equaliser in stoppage time to ensure Arsenal would take something away from the game.
And speaking after the match, Bellerin was sure the penalty decision was incorrect.
"He's very quick in the box - I saw the ball in the air and tried to challenge for it, we both got to the ball at the same time and the referee thought it was a penalty.
"It was great to score. I haven't scored in a while. I'm happy with the goal and the reaction of the whole team."