Borussia Dortumund coach Jurgen Klopp will be missing from the touchline for his side's Champions League clash with Arsenal later this month, as his supension has been increased to two matches.
Klopp, who was sent to the stands for verbally abusing the fourth official in the 2-1 defeat by Napoli last month, sat out a one-match ban for the 3-0 victory over Marseille on Tuesday.
But on Thursday, UEFA's disciplinary committee announced it had doubled the ban as part of a drive to encourage greater respect for match officials.
The explosive 46-year-old coach later apologised for his outburst and admitted on German TV: "I made myself look like a monkey out there and that's not on. I overstepped the mark and it was really pathetic of me."
Borussia have three days in which to lodge an appeal.