The Supreme Court in the United Kingdom on Wednesday ruled that the definition of a woman is someone who is born biologically female, excluding transgender women from the legal definition. 

The ruling came as a result of an ongoing conflict between the Scottish government and a feminist group.

Multiple women's groups celebrated the ruling outside the court following the decision.

“Everyone knows what sex is, and you can’t change it,” said the co-director of For Women Scotland, Susan Smith, the group that brought the case, according to The Associated Press. “It’s common sense, basic common sense and the fact that we have been down a rabbit hole where people have tried to deny science and to deny reality and hopefully this will now see us back to, back to reality.”

Five judges on the court ruled that the U.K. Equality Act means transgenders who identify as a woman will not be allowed in some single-sex spaces, such as changing rooms and homeless shelters. 

However, Justice Patrick Hodge said the ruling “does not remove protection from trans people,” who are “protected from discrimination on the ground of gender reassignment.”