A federal appeals court has upheld a jury verdict condemning Google’s Android app store as an illegal monopoly, clearing the way for a judge to enforce a potentially disruptive shakeup.

Alphabet’s Google on Thursday failed to persuade a U.S. appeals panel to overturn a jury verdict and federal court order requiring the technology company to revamp its app store Play.

The court rejected Google’s argument that the trial judge made legal errors in the antitrust case that unfairly favored Epic Games.