London - US Open champion Andy Murray is cleaning up his act after promising to stop swearing while on court.
The Scot has been warned about his language during matches in the past, but he believes non-Anglophone players get away with worse outbursts because umpires cannot understand what they are saying.
"Obviously, me saying shit or whatever is bad and wrong, and it's something I want to try to stop doing," Murray said, according to Scottish newspaper the Daily Record.
"But it isn't as bad as some of the stuff the foreign players come out with. I wouldn't want to name any names, but some of what they say is ghastly.
"It's just that all of the umpires speak English."
Murray, who became Great Britain's first male Grand Slam winner in 76 years when he won the US Open earlier this year, says his no-swearing campaign will begin at the Australian Open next month.
The 25-year-old was given an official warning for bad language at the Rome Masters this year and was also warned about his swearing at the 2011 Paris Masters.