Lille got past Bergerac Perigord 2-1 on Thursday to set up a Coupe de France quarterfinal clash with Ligue 1 leaders Monaco.
Javier Pastore and Edinson Cavani scored late on at Stade Rene Gaillard to beat the Ligue 2 hosts.
After his side laboured to a 2-0 win over Niort in the Coupe de France, PSG coach Unai Emery refused to blame the pitch.
Unai Emery was pleased with his players after they scrapped their way to a 2-0 win away to reach the Coupe de France quarterfinals.
In near torrential conditions, substitutes Javier Pastore and Edinson Cavani made the difference as PSG beat Niort 2-0 in the Coupe de France last 16.
PSG are through to the Coupe de France quarterfinals after a 2-0 win against Niort in a rain-soaked match.