The literature on cosmopolitan justice has yet to address what principles to adopt when duties of global justice and duties of social justice are in conflict. In this paper, I address David Miller’s contention that some may fall into the justice gap since we need to prioritize duties of social justice in cases of conflict. I argue that Miller’s analysis depends on three stipulations: the incommensurability of the values underlying duties of social justice and those of global justice; the need (...) to justify duties of justice to their holders; and the need to consider the necessary institutions to realize and implement justice obligations. I argue against the incommensurability clause by showing that both conceptions of justice pursue moral equality as the underlying and commensurate value. Instead, I propose that the currencies of justice we employ in the two contexts of justice are different. Discussing the justifiability clause I agree with the stipulation that we have to justify decisions that affect the realization of justice to those who have to carry the burden of realizing them. This implies, however, that we may have to accept that some prioritize duties of global justice over duties of social justice. If this is the case, it seems as though the state has little recourse to prioritize duties of social justice. Finally, discussing Miller’s institutional clause I ask why the justice relevant institutions can only be those of the state. It is plausible to say that in our current world, institutions of humanitarian aid are effective means to satisfy duties of global justice. (shrink)