A Florida voting rights group and university students from two schools sued the state’s chief election official over a 4-year-old edict banning the use of college buildings as early voting sites.

The lawsuit takes aim at a decision made by Secretary of State Ken Detzner in 2014 that the University of Florida student union could not be used by Gainesville city officials as an early voting site. Detzner concluded that the law prohibited the use of all college and university buildings for early voting, which is allowed up to 15 days before an election.