Haqq ad-Din ruled for ten years, until he was killed in action against soldiers of the Ethiopian Emperor. The date of his death is disputed: in the account of Al-Maqrizi, Haqq ad-Din was killed in AH 776 (= AD 1373/1374); however, the chronicle of the Walashma dynasty states he died in AD 1386. The matter is not helped by the fact Al-Maqrizi says the Emperor who ruled at the time of Haqq ad-Din's death was Dawit I, while Ethiopian sources state that the Sultan's reign began in the reign of Emperor Newaya Krestos.