Cardiff - Number eight Louis Picamoles will start France's Pool D decider against Ireland on Sunday as one of two changes to the team who beat Canada in their previous Rugby World Cup game.
Picamoles, who replaces Bernard Le Roux in the back row, was rested by coach Philippe Saint-Andre for Les Bleus's 41-18 victory against Canada, which gave the French three wins out of three.
Winger Noa Nakaitaci is also back in place of Remy Grosso, while Damien Chouly switches to openside flanker to make way for Picamoles at number eight.
There are also two changes from the team which started the campaign with a 32-10 win over Italy.
Centre Wesley Fofana replaces Alexandre Dumoulin and utility back Brice Dulin takes the spot of winger Yoann Huget, who was forced to quit the tournament through injury.
Although both Ireland and France have already qualified for the quarter-finals, the losers of Sunday's game is likely to face holders New Zealand in the first round of the knockout stage.
France: 15 Scott Spedding, 14 Brice Dulin, 13 Mathieu Bastareaud, 12 Wesley Fofana, 11 Noa Nakaitaci, 10 Frederic Michalak, 9 Sebastien Tillous-Borde, 8 Louis Picamoles, 7 Damien Chouly, 6 Thierry Dusautoir (captain), 5 Pascal Pape, 4 Yoann Maestri, 3 Rabah Slimani, 2 Guilhem Guirado, 1 Eddy Ben Arous
Substitutes : 16-Benjamin Kayser, 17-Vincent Debaty, 18-Nicolas Mas, 19-Alexandre Flanquart, 20-Bernard Le Roux, 21-Morgan Parra, 22- Remi Tales, 23-Alexandre Dumoulin