Jackass star Johnny Knoxville is legally single after nearly 13 years of marriage, court documents show.

Knoxville (real name: Philip John Clapp) filed for divorce from Melanie Lynn Clapp on July 3, citing irreconcilable differences.

The former couple have one daughter together, Madison Tatiana Clapp, 12.

Although their martial status ended last Thursday, their finances, custody arrangements and child support have yet to be settled. In his divorce filing, Knoxville requested joint legal and physical custody of their daughter.

Knoxville, 37, is best known for MTV’s Jackass, as well as a starring role in The Dukes of Hazzard.

Knoxville and his wife married in May 1995 and separated in July 2006.

Johnny Knoxville’s rep confirms that the Jackass star is calling it quits on his marriage. “They have been separated,” Amanda Silverman, Knoxville’s rep, says.

Knoxville, 35, and his wife Melanie have been married since 1995, but rumors of infidelity reportedly have hurt the relationship. While filming The Dukes of Hazzard, there were wide-spread rumors that he was having an affair with co-star Jessica Simpson, although both parties have denied it.

According to one source, the blame should be put all on Knoxville. “How do you live knowing that your husband leads a separate life… and is sleeping with other women all the time? She deserves every penny if she is going to divorce him,” the source said.

As for if they will get divorced, an insider says, “I really don’t know. They have been separated for a while. They just grew apart.”

The couple has one daughter, Madison, 10.