Football fans in Wigan have complained after the council installed new road signs recognising the recent success of the town's rugby league team.
Wigan Warriors beat St Helens in the Super League final on 2 October.
On Monday, Wigan Council installed an extra banner, which reads "Wigan Warriors Super League Champions 2010", below six "Welcome to Wigan" signs.
Dozens of Wigan Athletic football fans then complained the council were showing a bias towards rugby league.
The football fans' anger was compounded when contractors accidentally replaced one sign in Crow Orchard Road which acknowledged both Wigan Athletic and Wigan Warriors.
The council's head of highways, Mark Tilley, has now apologised.
He said: "We were notified of the situation by a number of Wigan Athletic supporters and we immediately made arrangements for the situation to be rectified.
"I can confirm that the original signage was reinstated later on Monday afternoon.
"Having recognised that we made a mistake I feel that we did act promptly to resolve the situation and I sincerely apologise once again for the upset this situation has caused."
A spokeswoman for Wigan Warriors declined to comment on the row, except to say the subject of the signs were a matter for the council.
"We are just happy to celebrate what the club has achieved," she said.
However Karen Fulton, a member of the Wigan Athletic Supporters Club's committee, said football was the "national game".
She added: "The council should recognise both teams in the same way and have both teams on all the signs.
"It should never have happened - you could say it was an own goal for Wigan Council."