Rangers manager Ally McCoist does not want his players to use the absence of Steven Naismith as an excuse for defeats.
The SPL leaders slipped to a 1-0 defeat at Kilmarnock on Sunday after Celtic had closed the gap at the top to four points 24 hours earlier.
Naismith is a key player in McCoist's squad, but the Scotland international will not play again this season after damaging knee ligaments against Aberdeen.
McCoist is happy with the options at his disposal and he does not want his players being distracted by a team-mate who cannot contribute again this term.
"Any team in the country would miss Naismith and we are no different," said McCoist.
"But there is no use sitting here saying we are missing Naismith without doing something about it. We have to do something about it.
"We have to win games other ways. Naismith ain't coming back so we just need to get on with it.
"Naismith being injured is a massive loss but we have other players in the squad who should be able to fill the gap. We can't use it as an excuse because it's not an excuse."
McCoist was also quick to defend new signing Sone Aluko after his mistake against Kilmarnock.
The ex-Dons man played Manuel Pascali onside on his debut, allowing the Killie captain to head home the winning goal.
"He's been on trial for the last couple of weeks and he has been a real breath of fresh air," McCoist added. "He's something different to what we've got.
"Maybe with it being his first game in a while he was a bit tired towards the end but I'm sure he will be able to give us a lot.
"Perhaps that's what we are looking for from him and fingers crossed that he can bring that to us."