The Bulgarians and the Byzantines agreed to a joint campaign against Serbia, but it took five years until the differences and tensions between Bulgaria and Byzantium were overcome.
Bulgaarlased ja bütsantslased leppisid kokku ühiskampaanias Serbia vastu, kuid võttis viis aastat, enne kui erimeelsused ja pinged Bulgaaria ja Bütsantsi vahel ületati.