Aston Villa captain Olof Mellberg has joined manager David O'Leary in criticising Lee Hendrie's yellow card for celebrating against Crystal Palace.
Hendrie's booking was for "unsporting" behaviour
Hendrie was booked by referee Mark Clattenburg when he jumped over hoardings to wave to his family after a long-range goal in Saturday's 1-1 draw.
"We know you can't pull your shirt over your head but I can't understand what he did wrong," he said.
"If there are rules I guess they have to apply them but it seems strange."
After the game, O'Leary criticised the referee, claiming he was inconsistent after Palace scorer Andy Johnson - a former Birmingham player - was allowed to celebrate his goal in front of the Villa fans.
"I asked why Johnson had not been booked for celebrating their goal and I didn't get an answer. That baffled me," he said.