 Nonetheless, in the following year, Barquq toppled as-Salih Hajji with the backing of Yalbugha's "mamluks" and assumed the sultanate, adopting the title of Baybars, "al-Malik az-Zahir".Barquq's accession had been made possible by the support of Yalbugha's mamluks, whose subsequent rise to power also made Barquq's position vulnerable.His rule was challenged in Syria in 1389 during a revolt by the Mamluk governor of Malatya, Mintash, and the governor of Aleppo, Yalbugha an-Nasiri, who was a former mamluk of both an-Nasir Hasan and Yalbugha al-Umari.