Résumé : A growing body of research has shown that naturalized citizens’ attitudes towards immigration worsen following citizenship acquisition. Accordingly, these socially mobile individuals tend to distance themselves from their former immigrant ingroup. The present contribution explains such self–group distancing coping strategy in terms of an “ironic” procedural fairness effect. Study 1 ( N = 566), a survey conducted among naturalized Swiss citizens, showed that fairness perceptions with respect to the naturalization process were indeed associated with stronger anti-immigration attitudes, and that this relationship was mediated by identification with the host nation. Next, two experiments were conducted to demonstrate the causality of the hypothesized mediation model. In Study 2 (Experiment 1; N = 248), fairness of the admission procedure (accurate vs. inaccurate) increased identification with a desirable group. In Study 3 (Experiment 2; N = 141), administration of a national identity prime evoked stronger anti-immigration attitudes. Taken together, our findings highlight a somewhat “dark side” of procedural fairness.