Abstract This article attempts to establish the important links between Corsican sociolinguistics and Catalan sociolinguistics. To this end, it returns to the main characteristics of Catalan sociolinguistics through the notion of “diglossia” and “language conflict” it generates, notions that have largely fed minority studies. Moreover, the terms of the famous Catalan dilemma are clearly stated by the substitution of the dominated language or its normalization as inevitable outcomes of linguistic conflict. The reflection tries to establish the parallels between the various situations and the passage from the Catalan elaboration of a conceptual tooling in a situation of domination to the Corsican sociolinguistic and political fields. Finally, we propose to re-evaluate the initial Catalan conceptual framework in order to better adapt it to the Corsican situation, notably by showing some limits of this framework in terms of diglossic polarities and representations.