Actor Wallace Langham has filed for divorce from his wife, according to a U.S report.

The Csi star has been married to Karey Ann Richard since 2002 and the couple has a seven year old daughter, according to Tmz.com.

Langham lists irreconcilable differences as the reason for the split and is asking the court for joint custody and not to award spousal support.

The couple has been separated for 18 months.