An Illinois state appeals court recently ruled against Hobby Lobby in what will undoubtedly be a landmark case on gender, sex, and transgender bathroom use going forward.

The court concluded that Hobby Lobby’s bathroom policies, which allow only biological women to use women’s restrooms, violated Illinois’s anti-discrimination law. The case involves an employee of over two decades, Meggan Sommerville, who transitioned from male to female and lobbied to use Hobby Lobby’s restroom to no avail.