Victor Osimhen came off the bench to score a stoppage time goal for Lille to win 2-0 at National 3 side Gonfreville and advance to the Round of 16 of the Coupe de France.
It was his first goal in the French Cup.
Osimhen has also scored 10 goals in Ligue 1, once in the UEFA Champions League and two in the French League Cup.
He has now netted 14 goals in all competitions this season after his arrival from Belgian club Sporting Charleroi.
Lille are fifth in the Ligue 1 standings.