Celtic won 3-1 at St Mirren extending their winning run in the league to 11 games. However, the main talking point was the yellow card shown to Bhoys keeper Artur Boruc for bringing down Buddies Craig Dargo as he broke clear.
St Mirren felt it was a certain red card offence but Celtic boss Gordon Strachan, not surprisingly disagreed.
"I know the referee is a good referee," he said. "The ball was going away from goal and he (Boruc) wasn't the last man, and it wasn't a clear goal-scoring opportunity.
"There were two players behind him so I think the yellow card was the right decision."
Strachan continued: "We played better than we did last week against Hamilton and we had to.
"I'm not surprised at how well St Mirren played because they played well in the second half against Rangers last week and we don't expect teams to lie down against us.
"We were fortunate we had players who can do magical things.
"In the first half I thought we had good periods but they (St Mirren) made it difficult for us - they were enjoying the game.
"But we've got a couple of guys who can do things a bit different."