Paris - World number one Andy Murray revealed that while motivation has been an issue of late, he always finds that extra gear for the grand slams.
Murray has endured a rather lacklustre run while sitting at the top of the tennis world, making just two finals and winning only one title.
The Scot revealed he has been struggling for inspiration since unseating Novak Djokovic in November, but he should have no trouble in finding that spark when Roland Garros gets underway next week.
"I got to number one in the world at the end of last year and there's been some times this year where it has been difficult to keep up the motivation and set new goals," the 29-year-old told Sky Sports.
"But over the last seven, eight years of my career I always wanted to perform my best and play my best tennis at the grand slams and that's still the case now.
"I always feel extra motivation when I come to a slam even if I have been playing badly."
On the subject of rival Djokovic, Murray revealed that he was surprised to see the duo team up as coach and player, but that it was good for tennis.
"To be helped by Andre, it's definitely a positive thing for Novak and it's good for tennis," he continued.
"When the great players of tennis stay in the sport, it creates lots of interest.
"I don't know the details of their agreement. But I know that Andre is a man who is very, very busy. He does many things beyond tennis, he has his school in Las Vegas.
"It was a little surprising because I didn't think he would decide one day to become a coach."
Murray reached the final at Roland Garros for the first time last year, where he lost to Djokovic in four sets.