Mythology and geography are inextricably linked in ancient Egypt, by the mere fact that its myths are often aetiological narratives about its territorial components. This contribution focuses on Nedit, a toponym which, in ancient Egyptian sources, designates the place where Osiris was killed by Seth. Its location has been the subject of much debate. Consistent evidence would make it possible to locate it in the Eastern Delta, not far from Busiris, but an equivalence with Abydos is another possibility. The transfer of the toponym for ritual purposes is not a suitable explanation to account for a delocalization that would imply an adaptation of the myth itself. The analysis of the mythological accounts from papyri Jumilhac and Salt 825 allows a better understanding of the use of the toponym.