Nice dealt a blow to PSG’s Ligue 1 title hopes with victory in a game which came to life in the closing 15 minutes.
Zlatan Ibrahimovic appeared to have earned the big spending capital side a draw in the 82nd minute, six minutes after Eric Bautheac had given Nice the lead.
However, Valentin Eysseric’s impressive right-foot volley won it for Nice, inflicting a first away defeat of the season on Carlo Ancelotti’s men.