However, he finally did accept and was the Kingdom's sovereign from 15 June 1903 to 1 December 1918, the day that the Kingdom of Serbs, Croats and Slovenes was proclaimed.
Cu toate acestea a acceptat să devină rege al Serbiei, unde a domnit de la 15 iunie 1903 până la 1 decembrie 1918, ziua proclamării Regatului Sârbilor, Croaților și Slovenilor.