Birmingham have been fined £10,000 by the Football Association after being found guilty of failing to control their players in last month's 1-0 defeat by Aston Villa.
The charge related an incident in the match when referee Martin Atkinson awarded a penalty against defender Roger Johnson and a number of Blues players reacted angrily.
The FA have warned Birmingham about their future conduct in addition to the fine, while Johnson was hit last week with a £7,500 fine for media comments made about Atkinson's performance.
An FA statement released on Thursday night read: "At an Independent Regulatory Commission earlier today, Birmingham City FC were fined and warned as to their future conduct following a charge of failure to control their players.
"Having admitted the charge and taken into consideration the club's previous record, the commission ordered that they be fined £10,000."