FX has renewed the comedy, It's Always Sunny in Philadelphia for a third season.

Danny DeVito has committed to continue as a series regular for all subsequent seasons, reports Variety. It's the most successful comedy on basic cable in recent years, and one of the few scripted, live-action primetime laffers to make it to a third season on ad-supported cable.

The show, which stars Charlie Day, Rob McElhenney, Glenn Howerton and Kaitlin Olson, centers on the misadventures of four friends who own a bar in Philadelphia. DeVito joined the cast in the second season as the clingy dad of Dennis (Howerton) and Sweet Dee (Olson), who attempts to recapture his youth by hanging out with his kids. Role reps DeVito's first regular TV series gig since Taxi.

FX has greenlit 15 new half-hours of It's Always Sunny in Philadelphia to begin production next spring for a premiere in summer.