The conflict in the Serbian-Hungarian border, has continued over the next two years, and in their suppression Sigismund was involved, who has repeatedly visited the army of the Danube. In Summer 1392, he was crossed the river near Kovin and march to the city of Ždrelo near Valjevo, then retreated and tried to win Golubac. At the same time, the area of Vuk Branković has been under Ottomans attack. In early 1392, they have occupied Skoplje and continued marching of the north, forcing Vuk by the end of the year to make peace with Bayezid and become his vassal.