Kim Kardashian’s ex Kris Humphries has filed for an annulment, claiming fraud as a reason for erasing the 72-day marriage, reports People.com.

A nullity is granted under California law if the court decides that no valid marriage occurred, the story notes. Besides fraud, other reasons for an annulment include bigamy and incest, according to the piece.

The two filings — Humphries’ annulment filing and Kardashian’s divorce filing — could set up a long legal battle, but a source quoted by People says that may not happen.

The source, who’s close to Kardashian, says: "She always wanted an annulment but attorneys were against it, so she’s happy that both parties agree now."