EN
This paper seeks to throw new light on the origin of the Kiev Missal by comparing the dialect of the Kiev Missal with the Sotak dialect of Koromľa, recorded by O. Broch in 1899. The Sotak dialect is chosen for the comparison because it seems to be very archaic and able to preserve old linguistic features, including accent. Moreover, in the medieval toponyms in the south-eastern area of the West-Slavic group of languages we can find some of the peculiar traits of the Kiev Missal, such as raT-/roT-, *dj> (d)z, epenthetic l, etc., and in the Sotak dialect of Koromľa epenthetic l, *dl> l, G pl. f. rukach, G sg. m. dobraho, and others.