This text captures one the lesser-described epizodes of relations between Czechoslovakia and Yugoslavia, i. e. the relations of these countries during the World War Two. Since 1943, agile Partyzans have become the main Yugoslav political current that the Czechoslovak exile government has dealed with and was considered by it to be competent to rule the postwar Yugoslavia. The Czechoslovaks have done so at the expense of relations with the exile régime headed by the king Petar II. In this paper, I describe the transfer of Czechoslovak focus from the exile government to the homeland-based Partyzans. An analysis of causes, context and consequences of this Czechoslovak policy is also included.