Lille missed the chance to move level on points with Ligue 1 pacesetters Paris Saint-Germain and Olympique Marseille when their recent fine run ended with a 2-0 defeat at Lorient on Friday.
Lorient, who had conceded 16 times in their previous four matches, triumphed thanks to goals midway through each half from Gregory Bourillon (pictured) and Benjamin Corgnet.
Lille, who had won their last three league games, stay seventh with 20 points from 13 games, three pionts behind leaders PSG.
Lorient, who kept only their second clean sheet of the season, move up a place to 10th with 18 points.
At the Moustoir, Lorient went ahead in the 24th minute when defender Bourillon headed home from a Yann Jouffre free-kick.
Lille came close to equalising early in the second half but Fabien Audard produced a great save to keep out Aurelien Chedjou's header.
Lorient doubled their tally in the 69th with Corgnet beating Mickael Landreau from close range after collecting a through ball from Jeremie Aliadiere after a counter-attack.
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