Ruby Walsh thinks extending the Cheltenham Festival to five days is a "bad idea".
New Cheltenham racecourse chairman Martin St Quinton recently opened the door to the jump racing bonanza ending on a Saturday.
"I wouldn't rule anything in, but I wouldn't rule anything out," St Quinton told ITV Racing.
"It would get a lot of opposition, but people don't like change. People complained when it went from three days to four, but now everybody loves the four-day Festival.
"Royal Ascot was very similar with the Heath meeting on the Saturday and now that is their most popular day, so you've got to be open-minded about these things."
But Walsh, who holds the record for the most winners at the festival, believes it should be left alone.
Speaking on Paddy Power’s new podcast, From The Horse's Mouth, he said: “The five-day festival is a bad idea. Can't see the need for it. In terms of dropping a race, I'd say a lot depends on what happens in this year's National Hunt Chase.
"I would be for keeping it. I think it's a great race. I would revert it back to what it was 15 years ago and make the conditions back to what they used to be.
"It was for horses who were maidens at the start of the season, so the quality of the race was much lower than it is now and they were all similar horses in the race, whereas now the way the conditions are changed, you can have four really good horses and 16 not-so-good ones, and that's where you end up then with horses that are unable to keep up and literally out of their depth.
"So, I would try and make it more horses of the same calibre, make it a more consistent race.
"I just think with the bad publicity the races is getting, that that's the one that could be in trouble, which would be sad, but that's what could happen.
"I think the Fred Winter has enabled the Triumph Hurdle to be a genuine Grade 1 contest and not the lottery that it used to be.
"The Fred Winter actually does serve a purpose and works.”
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