Wylan Cyprien says Nice must not get carried away with the prospect of winning Ligue 1 at this early stage in the season.
Nice are currently top of the standings, just a point clear of Paris Saint-Germain, with 11 wins from their opening 15 games.
They have lost just once and drawn three games, ahead of Sunday's home tie with mid-table Toulouse.
Speaking to the league's official website: "We don't put pressure on ourselves with that!
"We're going to go all out and if it goes well, all the better for us.
"We'll see where it works out in the end!"
He added: "We're being rewarded for our efforts. We have battled to be here, so we're not going to say we don't want to be here, but we mustn't get carried away.
"Thinking about how we're playing is the best thing to do, because if we think about what is at stake, it's the best way to stop playing as we can. The best thing is to take each game as it comes, this time it's Toulouse. And only the match that is coming."
Nice were held to a 1-1 draw at home to SC Bastia last week before seeing off Guingamp 1-0 on Wednesday.
The France under-21 international concluded: "It's true that we were a lot more solid defensively, and gave them fewer chances. Guingamp dominated possession towards the end of the game, but that was a conscious decision on our part.
"We wanted to preserve our lead. Compared to Bastia, where we left a lot of space and [goalkeeper] Yoan [Cardinale] was left exposed, we were able to defend well all together, we were unified.
"We really wanted to get something from here, and we did that in style, so that was all the better. It's something positive for our heads before the game against Toulouse."