Chaz Bono says he's OK with his mother's public references to him as a female.

The 41-year-old Bono, who was born Chastity Bono to gay idol Cher and the late entertainer-politician Sonny Bono, announced last June that he was eight months into gender reassignment.

He's previously said that he was “miserable” pretending to be a girl and that he “wasted” years worrying about transitioning.

In one interview, Cher said the transition has been hard “'cause she's still my girl.” And referred to Bono as “a very smart girl – boy!” in an interview with fashion glossy Vanity Fair.

Bono, however, told's Greg Hernandez that he's not bothered by the slip-ups.

“You know, it doesn't thrill me, but I understand it,” he said. “I understand that she's got 40 years of using one set of pronouns and it's hard to get used to it. So I try to be understanding about it and as long as she tries, that's really what's important.”

“It'll happen over time,” Bono added.

A documentary focusing on Bono's gender reassignment, titled Becoming Chaz, will premiere at January's Sundance Film Festival in Utah.