In the article the affiliation of Kujarke in genealogical classification is discussed. The Kujarke language is an isolate from Chad-Sudan neighborhood, described by the anthropologist Doornbos in 1981 (partially published in 1983). The present study operates with all c. 200 lexemes collected by Doornbos and evaluates their affinities in neighboring languages classified as Chadic and Nilo-Saharan. It is possible to conclude that Kujarke probably represents an independent group of East Chadic branch. From the neighboring Nilo-Saharan languages the strongest influence was identified from the Fur family.