Since the XIXth century, we can sometimes read in egyptological literature that the prince Merenptah, son of Ramesses II have been High Priest of Ptah at Memphis after his brother Khaemwaset. The author firstly shows that sources used are not relevant. He then explains that a High Priest of Ptah is already attested from the end of the reign of Ramesses II until Merenptah. Consequently, the latter could not have been High Priest. Two shabtis published recently, mentioning a High Priest of Ptah named Merenptah and the case of Hori son of Ptahmes are also discussed.