06/11/2007 AT 06:55 PM EDT
Dermot Mulroney has filed for divorce from his wife, actress Catherine Keener, according to papers filed in Los Angeles Superior Court.
Mulroney cites "irreconcilable differences" as the reason for the divorce. According to court papers, filed June 8 and released Monday, the couple separated in May 2005.
The couple, who wed in 1990, have a 7-year-old son, Clyde Keener Mulroney. In the documents Mulroney requests joint legal and physical custody of their son, and for property rights to be determined by the courts.
Keener has been nominated for a Best Supporting Actress Oscar twice, in 2000 for Being John Malkovich, and in 2006 for her role as Haper Lee in Capote. She also starred in the comedy hit, The 40-Year-Old Virgin.
Mulroney stars in the new movie Georgia Rule with Lindsay Lohan, and has also appeared in My Best Friend's Wedding, Must Love Dogs, and with Keener in 2001's Lovely and Amazing.