Author J.K. Rowling claimed that a ruling from the Scottish Supreme Court on transgender issues won’t change the definition of a woman.

The court is considering a case on the validity of the country’s gender recognition certificates. It remains to be seen if those with these certificates qualify for the 2010 Equality Act, which was an anti-discrimination law based on gender. Rowling posted an article on the topic to X on Saturday, as Scotland awaits to hear the ruling.