The invention relates to a medicament delivery device (1), comprising:- a tubular body (2) having a distal end (2.7),- a cap (3) adapted to be connected to the distal end (2.7) of the body (2),wherein the body (2) comprises a first clip (16) having a first stop (16.1) and a first ramp (16.2), wherein the cap (3) comprises a second clip (17) having a second stop (17.1) and a second ramp (17.2), wherein the first ramp (16.1) and the second ramp (17.1) are adapted to be mutually engaged when the cap (3) is connected to the body (2) in a first position (P1), wherein the first ramp (16.1) and the second ramp (17.1) are adapted to resiliently deflect at least one of the first clip 16 and the second clip (17) when the cap (3) is being moved from the first position (P1) towards a second position (P2), wherein in the second position (P2) the first stop (16.2) and the second stop (17.2) abut each other to prevent the cap (3) from being moved into the first position (P1).Furthermore, the invention relates to a method for assembling the medicament delivery device (1).
