France coach Philippe Saint-André has added uncapped flanker Virgile Bruni and full-back Jean-Marcellin Buttin to a 30-man Six Nations training squad.
The duo were added to the group on Sunday for a two-week training camp ahead of their opening fixture against England in Paris on February 1.
Les Bleus are without flanker Thierry Dusautoir and wing Sofiane Guitoune due to injury, which is why the Toulon and Clermont man were called.
"The amount of serious injuries since the start of the year is worrying," national head coach Saint-André said about the injury concerns he has.
"Thierry was back to his best level (before he ruptured a biceps tendon on club duty) and had a leading role in the squad," Saint-André added.