Neil Lennon expressed his concern after Sunday's 1-1 draw with St Mirren that some of his players hadn't been hitting top form recently.
The obvious reason is that the Celtic players don't have a rival pushing them all the way in the SPL title race, which has ultimately taken an edge off their game.
Some individuals thrive on pressure and the big game atmosphere which, in turn, brings the best out in them, but without Rangers in the championship race motivation has been questionable in certain games, which is understandable.
Celtic have been able to play within themselves for a lot of the season and still open up a comfortable 13 points gap at the top.
Dropping points is inevitable because of the lack of intensity in games and Lennon will have his work cut out to keep his players on their toes even with a potential League and Cup double still on the cards.