The 86-year-old revealed to some college students his plan to go to courthouse after visiting University of Southern California as a guest speaker at "Censorship in Cinema" class, reported Aceshowbiz.
"Today is a special day for us because after class we are going to the courthouse to get our marriage license," he said.
He attended the class with his fiancee who infamously dumped him just a week before their wedding last June.
Hefner, 86, and Harris, 26, then reconciled later that summer and she moved back into the Playboy mansion with him.
"Getting back together with Crystal Harris shouldn't be a big surprise, since I have a history of remaining close to former girlfriends," he said back then.