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,

TikTok is set to be banned in the US on 19 January after the Supreme Court denied a last ditch legal bid from its Chinese owner, ByteDance. It found the law banning the social media platform did not violate the first amendment rights of TikTok and its 170 million users, as the companies argued.