Will Buckley scored with virtually the last kick of the game to give Brighton & Hove Albion victory this afternoon.
The second-half substitute's effort was the first shot on target in a game of few chances.
Wes Morgan, making his 400th appearance for Forest, wasted one of the best opportunities of the opening period, prodding wide from close range.
The visitors looked the more dangerous over the course of the match but it was Gus Poyet's side that nicked the points when Buckley pounced on Craig Mackail-Smith's cutback to fire home.
The Seagulls jump into the playoffs while Steve Cotterill's Forest remain in the bottom three.