601496 A cartridge holder (2), which has a distal end and a proximal end, comprises a coupling housing portion (14) in which a cartridge can be inserted at least partly. The coupling housing portion is configured to be coupled to a part of a drug delivery device by inserting the coupling housing portion in the part. The cartridge holder further comprises a fixing member (21) which is connected with the coupling housing portion. The fixing member is bendable towards a longitudinal axis (50) of the cartridge holder to a position in which the fixing member engages with a neck portion of the cartridge, thereby securing the cartridge against distal displacement of the cartridge.
