 Bonifacius, in the meantime, had been unable to defeat Sigisvultus, whom Galla Placidia had sent to deal with the rebel.Bonifacius, therefore, entered into an agreement with the Vandals to come to his aid and, in return, they would divide the African provinces between themselves.Concerned by this turn of events and determined to hold onto the African provinces at all costs, the court at Ravenna sought reconciliation with Bonifacius, who agreed in 430 to affirm his allegiance to Valentinian III and stop the Vandal king Gaiseric.