Jenson Button says that he didn't cause a dangerous situation by overtaking under red flags during practice for the United States Grand Prix but accepted that he had to be given a penalty.
Button overtook Daniil Kvyat's Toro Rosso after the session was suspended due to technical problems with the medical helicopter.
As a result, Button will drop three place on the grid from wherever he qualifies.
"Both sessions today were quite positive," Button said after setting the ninth fastest time.
"Our car’s feeling reasonably good around here, and it’s a fun circuit to drive, so I think we can make further progress. Hopefully we can qualify a little nearer to the front, too."
"However, that will be made more difficult due to my three-place grid penalty for overtaking under a red flag during FP1. It wasn’t a dangerous situation, and I didn’t do it on purpose – the other car slowed down – but the rules are the rules, and it was the wrong thing to do."
"In terms of race-pace, I think we’re looking reasonably good – we just need to extract the maximum qualifying performance from the car. It’s a pity that I’ll be starting three places further back – I haven’t made it easy for myself in the past few races – but I’ll be giving it everything I’ve got tomorrow."