Jenson Button and McLaren have played down fears the 2009 world champion is not fully fit ahead of their home grand prix at Silverstone this weekend.
Button, 31, was scheduled to drive one of the Woking based team's F1 single seaters at the Goodwood festival of speed but instead switched to a road car in order to protect a minor knee injury.
It is reported the Briton knocked his knee whilst jet-skiing last week.
"I've just got a little niggly pain and it's not worth pushing it, I want to relax it for Silverstone and that's the only reason," he said. "It's all fine."
According to the Telegraph, a McLaren spokesman agreed: "He didn't drive a McLaren F1 car (at Goodwood) for precautionary reasons, in order to protect a small bump he'd received on his left knee during a jet-ski event in London last week.
"But he isn't even limping, and he'll be fighting fit for Silverstone, as usual."