Former Penn State President Graham Spanier is making another attempt to stay out of jail. He wants a federal court to vacate his criminal conviction for his handling of a 2001 complaint about Jerry Sandusky showering with a boy in a university locker room.

Spanier last week filed a petition with federal court in Harrisburg that argues his misdemeanor child endangerment conviction involved a version of the law that wasn’t in place in 2001. He’s also challenging how the statute of limitations was applied in his case.

Spanier’s been out on bail since his conviction in 2017. He says in the federal filing he expects to soon begin serving a term of two months in jail followed by two months of house arrest.