A documentary film maker sued the State of Georgia over a 2016 law that requires some looking to do film work in the state to sign an oath saying that they will not boycott the nation of Israel.

A documentary filmmaker who refused to sign the oath sued the state last year, saying the law is in violation of free speech rights guaranteed by the U.S. Constitution. Abby Martin says she refused to sign the oath, and her scheduled appearance at a Georgia Southern University media conference was then cancelled.

Requiring people who want to do business with the state to pledge that they are not engaged in a boycott of Israel is “unconstitutional compelled speech,” U.S. District Court Judge Mark H. Cohen wrote in his recent ruling.

Lawyers representing the state have said previously that Georgia’s law does not infringe on the First Amendment.