When Aerosmith frontman Steven Tyler entered a rehabilitation facility recently, the reason that was released for public consumption was that he was there for physical therapy following foot surgery. As it turns out, his stint in rehab was a little more complicated than that.

Tyler has now admitted that he was an addicted to prescription medication. The 60-year-old rocker apparently became dependent on pain and sleep medication that was prescribed to help him deal with foot surgery.

With a history of drug and alcohol abuse, Tyler apparently recognized that he was headed in the wrong direction and wisely checked himself into rehab. He reportedly said that he “didn’t like the me that was me.”

Tyler’s substance abuse during the 1970’s and 1980’s prompted him to enter rehab during 1986, which led to a successful comeback for the group.