In a surprise move, Trace Adkins has entered rehab after slipping off the wagon.

The singer, who has been candid about battling with alcohol in the past, had been sober for 12 years, but during his stint on the Country Cruising entertainment cruise he apparently let his guard down.

Adkins was the top-billed act on the cruise, which also features Montgomery Gentry, Wynonna Judd, Craig Morgan and more. The cruise kicked off Jan. 12 and is slated to run until Jan. 19, but Adkins has decided to depart the run early.

According to TMZ, Adkins was in the ship's bar during the trip to Jamaica when something happened that touched off a fight between him and a Trace Adkins impersonator who was singing karaoke. The site reports that a physical altercation followed, and that Adkins departed for rehab after the ship docked in Jamaica.

“Trace has entered a treatment facility after a setback in his battle with alcoholism," a spokesmen for the singer confirms to Country Weekly. "As he faces these issues head-on, we ask that his family’s privacy will be respected.”

In 2002 Adkins completed a 28-day stay in a rehab facility near Nashville, after pleading guilty to DUI charges the previous year.