Roger Federer will kick-start his claycourt campaign at next month’s Geneva Open as he steps up his preparations for the French Open, the 39-year-old Swiss wrote on Twitter on Sunday.

After missing more than a year following two knee operations, Federer returned on Tour at last month’s Qatar Open, where he lost in the quarter finals to Nikoloz Basilashvili.

“Happy to let you know that I will play Geneva and Paris. Until then I will use the time to train,” Federer, whose only French Open triumph came in 2009, tweeted.