Jorge Lorenzo has admitted the crash which broke his scaphoid and put him out of next month's Sepang MotoGP test was stupid.

The Spaniard was dirt riding in Italy and mistook asphalt for mud, which caused a front-end spill.

“One mistake I did was not to check properly the track, and in some zones of the track was like some bad mud, big mud, that was difficult to see," said the Mallorcan.

“The surface's perfect, was dry, but instead was this mud. And when I enter this zone, the front close, and I have a very stupid crash.

“Unfortunately my wrist was not completely healed from the Thailand crash, so didn't have the perfect mobility, and for sure this affect a little bit the pressure with the scaphoid, and the scaphoid was broken.”