The Serbian ace begins his Madrid Open campaign this weekend and explained that he and coach Andy Murray are working towards the second major of the year that begins on the Paris clay next month.

Djokovic told Sky Sports: "The priority is obviously trying to take the level of tennis that currently is maybe not where we want it to be to the higher level, so that I can peak at the French Open.

"That's where I really want to play my best tennis, Roland Garros and Wimbledon.

"Of course, we're in Madrid, we came in early. We're putting in a lot of hours in the court and in the gym, trying to perfect the body and the game and basically every aspect of my game to be a few per cent better than it was in the previous weeks.

"If I can reach that desired level this tournament, that would be amazing. I don't have really high expectations and I really hope I can get through the first hurdle and then we'll take it from there."

Djokovic has been working with Murray since the end of last year and the 24-time major winner revealed that the former player has a major role in keeping his motivation high for training sessions.

The world number five said: "The priority for us is always trying to approach the training session with the right kind of mentality - it's not always easy.

"Some days I feel excited and really motivated, some days less. He [Murray] as a coach also has to manage that, which is not always easy.

"Then it's obviously about specific elements in the game with certain shots that are happening in a certain pattern for days or weeks already.

"It's really a combination of things, I would say. As we are coming closer and closer to the first match, we're working on more of the specifics to fine-tune the game. To be ready to play points and matches, not just from the game standpoint but also mentally and emotionally."