Hull have been fined £20,000 after admitting they failed to control their players during Saturday's defeat to Arsenal.
Tigers players surrounded referee Mark Clattenburg after Arsenal full-back Kieran Gibbs was only booked for fouling Lazar Markovic when the Hull winger was clear on goal.
Marco Silva's men were furious that the Gibbs had got away without being given his marching orders by Clattenburg.
That resulted in a Football Association misconduct charge, which the club have admitted.