BOZEMAN, Mont. (AP) — A Livingston man who was convicted of drunken driving while on probation for a fatal DUI crash has been sentenced to finish his prison term in the 2001 case.

District Judge Mike Salvagni revoked Aaron Holsinger's probation Friday and reinstated his previous 20-year sentence for negligent homicide.

The Bozeman Daily Chronicle reports ( ) Salvagni sentenced Holsinger to 15 years in prison and five years on probation. He gave Holsinger credit for the six months he served in jail in the earlier case and the six years he's spent on probation, meaning he faces 7.5 years in prison.

Holsinger, then 20, pleaded guilty to negligent homicide for the 2001 crash that killed Gina Erickson of Amsterdam as the two drove home from a party.

Holsinger was arrested for aggravated DUI in April 2014 in Park County.