Abstract: The invention relates to a packaging device for a product to be dispensed, comprising a bottle suitable for containing the product to be dispensed and having a neck comprising an inner wall delimiting an opening, a dispensing device comprising a body and suitable for dispensing said product, a fastening element for securing the body of the dispensing device in the neck of the bottle, the fastening element cooperating with the inner wall of the neck of the bottle. The device is noteworthy in that the fastening element comprises an internal hollow shaft and in that said dispensing device comprises a fastening member of said dispensing device, the fastening member being integral with said dispensing device and being fixed around the internal hollow shaft of the fastening element.