A UFC fighter-pay antitrust case that stretches back nearly a decade took another detour Tuesday when U.S. District Court Judge Richard Boulware denied a preliminary $335 million settlement agreement.

The precise reasons behind Boulware’s rejection of the settlement was not laid out in the notice posted on the court docket, although he expressed concerns over the payout amounts to fighters at a July hearing. Boulware is expected to file an order that will detail his issues with the settlement ahead of an Aug. 19 hearing in a Las Vegas federal courtroom.