McLaren driver Jenson Button has admitted that he is not too hopeful of making an impression in the Canadian Grand Prix this weekend.

McLaren have won five of the last eight races in Montreal, but the British driver has conceded that they have been held back by a number of issues this campaign.

"Overall, Canada has been a pretty good circuit for McLaren but this time around we're not going to set the world alight simply because we are going to Canada," he told reporters at a press conference.

"But I really do feel the changes we made in Monaco helped us, and I really do hope that carries over to Canada, and I think it will."

McLaren have recorded 37 points from the first six races.