The app had more than 170 million monthly users in the U.S. The black-out is the result of a law forcing the service offline unless it sheds its ties to ByteDance, its China-based parent company.

In an unsigned decision, the court sided with the government’s arguments that the divest-or-ban law does not violate the First Amendment. In a unanimous ruling, the Supreme Court voted Friday to uphold a law that will require TikTok to shut down as soon as Sunday,

The Supreme Court has unanimously upheld the federal law banning TikTok beginning Sunday unless it’s sold by its China-based parent company.