On screen, he's known for comedic roles, but in real life Chris Klein is taking a serious crack at sobriety following his second DUI arrest in recent years. The 'American Pie' star has decided to extend his stay at a treatment center for alcohol abuse, his rep tells PEOPLE.

"Chris, along with his support team, has decided to extend his treatment. He is doing fantastic and is optimistic about his future. He thanks everyone for their continued support," his rep Jaime Primak said of the actor, who has been at Cirque Lodge in Utah since June 21.

Primak did not say how long Klein intends to stay at the Utah facility.