Jenson Button feared he had made a "catastrophic" decision after switching to slick tyres early in Sunday's Australian Grand Prix - a move which ultimately proved an inspired choice as he secured his first win with McLaren.
A crash between BMW Sauber's Kamui Kobayashi and Williams' Nico Hulkenberg brought the safety car out and once it left at the end of lap five, Button made the call to enter the pits first and switch to slicks.
"I thought I'd made a catastrophic decision and I feared it was a massive mistake on my part because it was soaking wet there - and when I left the pits, I went off the circuit and just thought, 'oh no'," said the reigning world champion. "I got to grips with it pretty quickly, though, and soon started to feel really good in the car."
He added: "Once I got it going and up to speed after my little 'off' at turn three, the pace was pretty good.
"I was able to put in some good laps and overtake three or four cars when they stopped to put slick tyres on. It was the right call, and I'm very happy that I made it."
The victory was all the more impressive considering it was just Button's second race for McLaren since making the switch from Brawn GP.
"I want to say a massive thank you to the whole McLaren-Mercedes team - they've done a brilliant job," he said.
"To not only be on the podium, but to be on the top step, after just two races is amazing.
"I don't know what to say really. It is very difficult to put it into words. It's a very special feeling and we'll take a lot from this."