The annual cheese-rolling event in Gloucestershire has been cancelled because of worries that there are too many people coming to watch.
Organisers of the event near Brockworth said 15,000 people attended last year - more than three times the number they can fit in.
The cheese-rolling dates back hundreds and hundreds of years.
Competitors race after a 7lb Double Gloucester cheese down the a hill and the winner gets to keep the cheese.
The police are working with organisers to make it easier and safer, and it's hoped the event will go ahead in May 2011.
There won't be any cheese rolling down the hills this year
All of the cheeses thrown down the hill are made by Diana Smart, 83, on her farm in the Forest of Dean.
She said she was upset about news the event is cancelled: "I'm shaking at the prospect of not having any cheese-rolling."