Rangers striker Kenny Miller believes Dougie McDonald will be able to handle the pressure of officiating in Sunday's Old Firm clash.
The referee's performance will come under even more scrutiny than usual after an unknown Celtic source claimed that key decisions had gone against them this season.
Bhoys manager Tony Mowbray has also voiced his hope that there will be no controversial rulings in the latest encounter between the Glasgow giants.
The experienced McDonald has stressed that he will be able to cope and Miller does not see any reason to be concerned.
"The referees are professional, they have probably seen it all before with complaints and stuff.
"We've got a good man in the middle there in Dougie and I read somewhere that it was his fifth Old Firm game so he knows what it's about.
"I'm sure he will be ready and he will be prepared for the game as normal."
Responding to the Celtic source's comments, Miller added: "If that's the road they want to go down, that's fine, but I don't want to comment too much on that.
"What I would say is, I'm sure everybody could complain about decisions.
"They feel they've got a case and that's fine. We will just be firmly focused on the game and making that big step towards retaining the title."
Miller feels he has been the victim of dubious decisions in the past but insists referees should be respected for doing such a difficult job.
He added: "I'm probably one of the biggest moaners at referees and, personally, I've had a lot of decisions against me that I feel were wrong.
"But you just have to get on with it, it's part and parcel of football.
"It's a hard job the referees and linesmen have got, they have to make a decision in a split second, which is probably the hardest thing in the world to do."