On Saturday, ASPTT Mulhouse won against league runners-up Beziers 3-1.
With that, Anna Haak and her teammates secured the title in the French top league in volleyball - even though there are four rounds left to play.
This is the 24-year-old's second season in France.
It is also the club's second league title in history on the women's side, the first the club won in 2016/2017.
This week, Anna's little sister Isabelle Haak can become champion in Turkey with Vakifbank.