Dennis Hopper was diagnosed with prostate cancer in October, and though reports suggest his condition has declined in recent weeks, the actor has just filed for divorce from his wife of 13 years, according to PEOPLE. Hopper, 73, cites irreconcilable differences in his split with Victoria, Los Angeles court records show.

The actor is requesting joint legal and physical custody of their 6-year-old daughter Galen, and plans to provide spousal support to Victoria.