Jean Dujardin has apologised for swearing in French as he picked up his Best Actor Oscar on Sunday night.
The French star took gold at the glitzy ceremony in Los Angeles for his role in silent movie The Artist, seeing off competition from George Clooney, Brad Pitt, Gary Oldman and Demian Bichir.
Dujardin was ecstatic as he made his acceptance speech and he invoked his The Artist character George Valentin to yell exclamations in French, including a curse word which is the equivalent of dropping the 'f-bomb'.
He was asked about his swearing during a backstage press conference and Dujardin smiled as he admitted uttering the naughty word in front of millions of TV viewers.
But he then apologised for his behaviour, telling reporters: "Yeah. I'm sorry."
The Artist became the first silent movie to win a Best Film Oscar at the Academy Awards in 84 years on the glitzy night.
The black and white film completed a weekend trio of triumphs after also winning gold at the Cesar Awards in Paris on Friday and the Independent Spirit Awards in Santa Monica, California on Saturday.
It was also hailed with a number of other Oscars - the film also took home trophies for Costume Design and Score.
See all the winners with their statuettes: