Delivering a keynote address at the 'ESPNcricinfo at 20' event here, Chappell said so far only "soft targets" have got the punishment for corruption from cricket administrators.
"I would like cricket administrators to get back to where priority number one is ... I think now the most important issue for cricket administration is corruption. I can't think of anything other than corruption that can bring this game down," Chappell said.
"If you look at what cricket has done, the only convictions cricket has got seem to me to be very, very soft targets. I don't think that all the people, all the players, mixed up in this are all soft targets," he added.
Chappell called for a zero-tolerance approach to fixing from the game's administrators, including bans for players suspected of corruption, regardless of whether such suspicions would hold up in court.
"Players have got to become whistle-blowers, and they've got to be educated how important this is. You cannot tell me that if you're in a dressing room and there's some funny stuff going on, surely to Christ you're going to know," he said.
