TikTok said its services will go dark on Sunday without a guarantee from the Biden administration that it won’t punish Apple, Google and other service providers if they support the app, Report informs via CNBC.

“Unless the Biden Administration immediately provides a definitive statement to satisfy the most critical service providers assuring non-enforcement, unfortunately, TikTok will be forced to go dark on January 19,” TikTok said in a statement on Friday.

The statement indicates that TikTok’s American user base, which the company claims is over 170 million, will not be able to use the service when they open the app or website on Sunday.

TikTok issued the statement after the Supreme Court on Friday ruled unanimously to uphold a law requiring that service providers no longer support its app within the US if parent company ByteDance fails to carry out a “qualified divestiture” of the app by Sunday. As a result, Apple, Google and Oracle could face tough penalties if they fail to adhere to the law.