Michael J. Fox can still play 20-year-olds on screen, but with a 30th birthday in June, he no longer wants to.

The baby-faced actor has told his production company, Snowback Productions, to find him roles that match his age, Us magazine said in its April 4 issue.Fox said marriage and the birth of his son, Sam, now 21 months old, have helped him mature.

"To be a happy, healthy, family oriented person is more important than trying to be the boy prince of Hollywood," Fox said.

"You lose the arrogance of youth. You take a look at old people and say, `Yeah, I can actually see that as a possibility now.' It'll be fun to say I'm 30."