Steve Mandanda has warned his Marseille team-mates they must not get carried away with their perfect start to the season.
Marseille travel to Nancy on Sunday looking to earn a record fifth straight win in Ligue 1.
Many expected Paris Saint-Germain to run away with Ligue 1 this season after their lavish spending spree, but it is Marseille who are taking the division by storm so far.
L'OM, under new coach Elie Baup, have registered four wins from their opening four games, including a notable 1-0 win over champions Montpellier.
Mandanda has been key to that run, with his heroics in goal meaning the club have only conceded one goal so far, which came in the 3-1 win over Rennes on September 2.
Should they win at Nancy, it will be the first time the club have started a season with five straight wins, but Mandanda has warned they must not head to the Stade Marcel Picot thinking they already have three points in the bag.
"We know that we have made a good start but we must keep our heads now," the goalkeeper told Marseille's official website.
"We must keep the humility that we've had in our most recent matches."
Nancy have not won since the opening day of the season and in their last game they found themselves on the wrong end of a 3-0 drubbing at Lorient.
Mandanda is conscious that the Astroturf pitch at Nancy's stadium may provide his team with one of many hurdles to overcome tomorrow evening, however.
"We know they are a highly-motivated team and this is a game that will be live on television and it is on a synthetic pitch," the 27-year-old added.
"You don't get the same level of support with this kind of pitch so it will be more complicated than usual for us."
Marseille, who are likely to have Souleymane Diawara and Lucas Mendes available again, will come up against a Nancy team determined to knock them out of their stride, Les Chardons defender Salif Sane has warned.
"It's exciting to try to be the first team to take them down or at least prevent them full points," Sane told Nancy's official website.
"We know that everything is possible and we want to meet this challenge."
Sane, who joined the club permanently from Bordeaux this summer, has been impressed with how Baup's team have started the campaign, however.
"They are one of the best teams in the French championship," said the 22-year-old, who is expected to overcome a thigh injury and start Sunday's game.
"If they keep up their good start to the season, they will win the league and that wouldn't be a surprise because Marseille are a great club."