After having to settle for a point in their opening Ligue 1 fixture against Montpellier, PSG were in need of a win to keep up with the early pacesetters.
However, they were behind after 10 minutes to a superb Benoit Pedretti strike, and it looked as though the visitors would travel back to Corsica with all three points.
They withstood a barage of pressure from the title holders, who had over 30 shots shots in the match, before eventually being breached by Edinson Cavani’s first PSG goal after 86 minutes.
The Uruguayan was making his first league start for the club since arriving for a record €64m from Napoli.
Laurent Blanc’s side would have secured a comfortable victory were it not for an excellent performance from Ajaccio goalkeeper Guillermo Ochoa, but they now sit in 13th place after the weekend’s action – four points behind Lyon, Monaco and Marseille.
YouTube credit: Ligue1official