A Valley Stream man says he will spend five years behind bars for defending his sister.

A judge convicted Brian Olson, 24, of felony assault for breaking a beer bottle over 21-year-old Greg Dugan's head. Olson and his family say Dugan was among a drunken group who physically and verbally harassed Olson's sister in the early morning of July 5, 2004, in Long Beach. Dugan says the attack, which left him with a scar across his face, was unprovoked.

Olson lost his appeal and is set to serve a five-year sentence. However, his attorney says he will continue to fight for his client's release.