Name of street is officially "duško trifunović", not genitive version of "duška trifunovića". Did .osm produced wrong name (bug?) or you changed it later? If latter, try to keep RGZ name, as per discussion at https://community.openstreetmap.org/t/uvoz-adresnog-registra-pravila-tagovanja-adresa-u-srbiji/8915. If you think it is in genetive (ground truth), let me know to update rgz->osm street name mapping!