The American Civil Rights Union landed a major victory this week when a U.S. District Judge in the Southern District of Mississippi signed a consent decree to clean up Walthall County’s voter registration rolls. Census data for the county shows there are 9,536 people over the age of 18. The problem, however, is that there are 10,078 active voters listed on official records, which prompted ACRU to sue officials in the county earlier this year.

“This is historic and should have been done 20 years ago,” ACRU Chairman Susan A. Carleson said in a statement. “It’s the first time since Motor Voter [National Voter Registration Act] was enacted in 1993 giving private parties the right to sue over voting irregularities that any private party has won a case to require clean voter rolls. With the Justice Department on the warpath against state election integrity laws, it couldn’t come at a better time.”