England midfielder Jude Bellingham has been fined 40,000 euros (£34,000) by the German Football Association after questioning the appointment of referee Felix Zwayer for Borussia Dortmund's Bundesliga match against Bayern Munich.
Bellingham criticised Zwayer after Dortmund's 3-2 defeat on Saturday, referring to the official's six-month ban for a match-fixing scandal in 2005.
The 18-year-old has been fined for "unsportsmanlike behaviour".
Dortmund will not appeal.
During Saturday's game, Zwayer turned down Dortmund's appeals for a penalty before giving their rivals a spot-kick for a Mats Hummels handball. Robert Lewandowski scored it to give Bayern victory.