Two of the groups most opposed to the Religious Freedom Restoration Act's so-called "fix" filed a lawsuit Thursday challenging that measure.
The groups say the "fix" infringes on their religious liberties.
In the wake of controversy surrounding RFRA, lawmakers created a "fix" that says businesses can't refuse service to people based on sexual orientation and gender identity – with exceptions for churches, their schools, and religious nonprofits.
But the Indiana Family Institute and American Family Association of Indiana – two conservative, religious advocacy groups – say they don't fall into those categories.
A lawsuit filed Thursday in Hamilton County Court claims the RFRA fix is therefore unconstitutional, violating the groups' free exercise of religion, among a host of other alleged constitutional violations, including freedom of speech and equal protection.
The suit notes that while RFRA gave groups like the Indiana Family Institute a right to fight government regulations that burdened their religious freedom, the fix took that right away.
LGBT rights organization Freedom Indiana calls the lawsuit a "distraction" intended to ensure the state's reputation continues to suffer.
The two groups are also challenging human rights ordinances in Carmel and Indianapolis.