The European Commission, the executive arm of the European Union, has hit Meta, the company that owns Facebook, Instagram, and Threads, with a fine worth $840 million for what it classifies as an antitrust violation.

The European Commission on Thursday fined Meta €797.72 million for violating EU antitrust laws. The penalty stems from Meta’s integration of Facebook Marketplace with its social network, Facebook, and its imposition of allegedly unfair terms on other online classified ad providers.