Charlie Sheen has returned to work on Two and a Half Men after a brief stint in rehab.

Reps for the show and Sheen said that he returned to the set Tuesday to resume production on the sitcom’s final four episodes of the season. The network ordered a total of 24 episodes.

Production on the show, which is TV’s #1 sitcom, was suspended for three weeks when the actor announced he was entering rehab as a “preventive measure.” It is still unknown where he did his rehab or what exactly it involved.

Sheen’s time off did not greatly affect the show’s production schedule, as CBS already had three episodes completed at the time of his announcement and they were scheduled to have a week off in March anyway so there was a minimal impact on the rest of the cast and crew.

On Monday, Sheen pleaded not guilty to domestic violence charges stemming from his Christmas Day arrest. He will return to court July 21.