Abstract This article ethnographically examines the everyday lives and collective activism of undocumented migrants in Belgium as they await the results of asylum appeals and regularisation applications. We show how the values emphasised by state-led migrant legalisation regimes contrast with undocumented migrants’ narratives of their own worthiness. In foregrounding deservingness as a moral and legal threshold, we argue that the Belgian nation-state responds to undocumented migrants by enforcing and implementing citizenship policies that persistently keep them on the fringes of legitimacy and recognition. The discursive constructions of ‘good citizens’ that undocumented migrants embody and make claims to in Belgium extend to and envelop the lives of undocumented migrants in Europe in general.