Paris St Germain sealed their place in the quarter-finals of the Coupe de France with a 1-0 win in their postponed match at Dijon.
Nene scored the game's only goal after 15 minutes to keep PSG, top of Ligue 1, on course for a domestic double.
The capital club were joined in the next round by ten-time winners Marseille, who beat fourth-tier side Bourg-Peronnas 3-1.
Evanilson Brandao set OM on their way with goals on 28 and 45 minutes before Jordan Ayew netted nine minutes after the break on his return from African Nations Cup duty with Ghana.
Ousmane Diaby grabbed a consolation strike for the hosts on 78 minutes.
Both games had been postponed due to freezing weather conditions last week.