Robin Williams Did Not Fall Off the Wagon: Actor Checks Into Treatment Facility to Maintain Sobriety

Actor has been frank about battling substance abuse issues in the past, but rep says he's "taking the opportunity to fine-tune and focus on his continued commitment"

Robin Williams is taking some time to keep on keepin' on.

The Oscar-winning actor, who has been frank about his battles with alcohol and substance abuse, has checked into a facility in his ongoing quest to maintain his sobriety.

"After working back-to-back projects, Robin is simply taking the opportunity to fine-tune and focus on his continued commitment, of which he remains extremely proud," Williams' rep tells E! News.

Furthermore, contrary to some reports, he is not in rehab at Hazelden Addiction Treatment Center in Minnesota, contrary to some reports, but is rather staying at a separate facility for specialized treatment.

"This was totally planned and scheduled," a source tells us. "He's been working for about 18 months straight. He had some time off so is using it to do a check-in."

Williams had been starring in the CBS series The Crazy Ones, playing Sarah Michelle Gellar's quirky advertising-exec dad, but the sitcom was not picked up for a second season.

The 62-year-old funnyman most recently appeared on the big screen in the indie flick The Angriest Man in Brooklyn, costarring Mila Kunis, and he'll be reprising the role of Teddy Roosevelt in Night at the Museum: Secret of the Tomb, the third movie in the hit comedy franchise.

Last September, he opened up to Parade about falling off the wagon after 20 years of sobriety while shooting The Big White in 2005.

"One day I walked into a store and saw a little bottle of Jack Daniel's. And then that voice—I call it the ‘lower power'—goes, ‘Hey. Just a taste. Just one,'" Williams recalled. "I drank it, and there was that brief moment of ‘Oh, I'm okay!' But it escalated so quickly.

"Within a week I was buying so many bottles I sounded like a wind chime walking down the street. I knew it was really bad one Thanksgiving when I was so drunk they had to take me upstairs."

So it was off to rehab in 2006 at the behest of his family.

"It was not an intervention so much as an ultimatum," Williams admitted. "Everyone kind of said, ‘You've got to do this.' And I went, ‘Yeah, you're right.'"