Paul O'Grady's teatime show has been let off by media watchdogs after guest star Sir Elton John swore on live TV.
Asked why he had changed his name from Reginald Dwight, Sir Elton replied that it had made him sound "like a banker... or a w***er, one of the two".
Ten viewers complained to Ofcom and around 20 to Channel 4.
Ofcom concluded that the word was "considered quite mild" by most people.
The issue has been resolved after Channel 4 agreed to remind guests of the importance of using appropriate language.
In its ruling, Ofcom said its own research "suggests that while this word is considered quite mild by most, a small minority of sections of the community (eg older people) find it quite offensive. "This series does tend to attract an older audience and, in this context, the use of the word 'w***er' was unfortunate."
Host O'Grady told viewers at the time: "And if we have been a bit raucous tonight, I'm very, very sorry but we're highly excited..."
Ofcom described it as an "apology of sorts".