Considering the importance of death and the afterlife in Christian preaching, it seems that the orthodoxy of indigenous funerary practices was proof of sincere adhesion to Christianity. We should therefore expect that the new world's evangelists would care about controlling the funerary practices of the new converts in their respective parishes. Yet, things happened in very different ways in Mexico and in the Andes. For decades, the religious authority was insensitive to this matter in New Spain, whereas in the Andes, the control and denunciation of deviancies occurred very early. Was it linked to the importance of ancestor worship in this region? In this text, the author defends the thesis that in Mexico, the lack of interest in this problem does not come from the fact that the Christianization of death there was easier than in the Andes. In fact, for many years, the more discreet indigenous rites remained hidden from the religious authorities who, therefore, did not fight them.