The owner of France's unofficial mascot - a cockerel named Balthazar - has been sent a letter warning him not to bring his pet to matches at Euro 2016.
French fan Clement Tomaszewski has been to more than 220 internationals since 1982, but since the 1998 World Cup has been renowned for bringing along Balthazar the cockerel to matches.
"My cock's part of the French football legend and yet I can't bring him to a game," Tomaszewski told BBC Sport.
"I am 68 years old, this is my sixth and last Euros. I am very upset. Balthazar will be there during all the Euro matches. If he isn't allowed in then I won't go in either."
In the letter, UEFA informed Tomaszewski: "You will not be allowed to enter the stadiums during UEFA Euro 2016 with your cockerel Balthazar.
"As nice as it is, the presence of your cockerel would put you in an awkward position vis-a-vis the security of teams."
Tomaszewski also admitted that he has previously been kicked out of foreign stadiums, as well as some hotels due to Balthazar's early-hours crowing.