According to the conclusion of peace, Prince Stefan pledged to send extra squads to Ottoman sultan and pay tribute, and he and his brother Vuk Lazarević must appear annually at the Sultan's Palace to confirm the allegiance to Bayezid I. In addition to these common vassal obligations, Bayezid I has married youngest daughter of Prince Lazar and Princess Milica, Olivera, which, her brother and the new prince, Stefan, personally had to take to the Sultan Bayezid in Bursa. The consequences of this peace were immediately visible because already in summer 1390, Serbian forces reinforced with extra Ottoman detachments, recaptured the lost cities, and probably in part of these operations the Ottomans took Golubac. Stefan military support various Ottoman campaigns while Bayazid I support Stefan against his nobles and his restoring of Serbia which become relatively strong state.