Swimming star Ian Thorpe has called for an automatic life ban for athletes caught using performance-enhancing drugs.
The Australian teenager said swimming's current policy of two-year suspensions was insufficient and tougher penalties were needed to clean up the sport.
"I support a lifetime ban for any substance abuse that's a specifically performace-enhancing drug," Thorpe said.
Swimming's reputation has been tarnished by a series of doping scandals in recent years.
Thorpe has already criticised the sport’s governing body FINA for refusing to conduct blood tests at last year's world championships.
"There's an odd occassion when an athlete makes a mistake when an athlete might take a drug to help them with an illness and not know the consequences," he said.
"It's in that kind of situation that you look at a reduced ban throughout the sport but that's the only time we should be going to court and looking at how much that sentence is actually reduced."