David James was left frustrated by the award of the penalty for Birmingham's winner against Portsmouth.
Pompey keeper James was adjudged to have fouled Birmingham midfielder Sebastian Larsson in the final minute as he looked to collect a high ball inside the box.
James McFadden scored the resulting penalty to condemn Portsmouth to a second successive defeat and James was left frustrated by referee Lee Probert's decision.
"The ball's gone up, I have made what I think is a legitimate attempt to catch the ball," James told Sky Sports.
"I think I was impeded, I am not sure which player it was. I think he made a legitimate attempt to get in my way and somehow the referee has construed that to be a professional foul or whatever it is and resulted in the winning penalty so I am a bit frustrated.
"We worked hard today, we weren't the best throughout the match, but definitely worth a point and as I say the decision at end was frustrating."