​ABC Radio won't be reviewing its vetting procedures despite a number of controversial comments being made on air by callers in recent weeks.

On Monday a caller rang Jon Faine's ABC Melbourne program to praise Hitler's treatment of gay people.

The veteran broadcaster was interviewing Victorian Human Rights Commissioner Kristen Hilton to discuss the upcoming same-sex marriage postal survey.

Faine then accepted a call from a listener who said his name was Don. The man said he thought it was "disgusting" the commissioner was encouraging people to vote yes, before asking if he could "say one more thing".