Medicament delivery device comprising - a housing (10; 110; 210; 310; 414) configured to receive a medicament container (16; 112; 316; 452) having a delivery member (20; 114; 318; 448) and a shield (22; 116; 320; 446) that covers said delivery member (20; 114; 318; 448), the housing having a longitudinal axis (30; 134; 350; 415), and comprising first connecting means (28; 129; 216; 312; 434) - a protective cap assembly (24; 128; 212; 322; 410) comprising a protective cap (26; 126; 214; 324; 428) which comprises second connecting means (27; 127; 215; 326; 432), wherein the first and the second connecting means (28; 122; 216; 312; 434 and 27; 127; 215; 326; 432) are configured such that a displacement of the protective cap (26; 126; 214; 324; 428) relative to the housing (10; 110; 210; 414) allows the protective cap (26; 126; 214; 324; 428) to be removed from the housing, and wherein the protective cap (26; 126; 214; 324; 428) further comprises third connecting means (64; 140; 332; 444) for connecting to the shield (22; 116; 320; 446) of the medicament container (16; 112; 316; 450) such that removal of the protective cap (26; 126; 214; 324; 428) from the housing causes removal of the shield (22; 116; 320; 446) from the medicament container (16; 112; 316; 452), characterised in that the protective cap assembly (24; 128; 212; 322; 410) further comprises first disconnecting means (36, 38, 44, 52; 120, 130; 218, 230; 336, 340; 454, 462) configured to interact with corresponding second disconnecting means of the housing (14; 122; 220; 352; 420) and of the protective cap (63; 131; 246; 345; 428) such that a linear movement of an activation mechanism causes activation of the first disconnecting means (36, 38, 44, 52; 120, 130; 218, 230; 336, 340; 454, 462) of the protective cap assembly (24; 128; 212; 322; 410), which in turn causes the displacement of the protective cap (26; 126; 214; 324; 428) relative to the housing (10; 110; 210; 310; 414). - a housing (10; 110; 210; 310; 414) configured to receive a medicament container (16; 112; 316; 452) having a delivery member (20; 114; 318; 448) and a shield (22; 116; 320; 446) that covers said delivery member (20; 114; 318; 448), the housing having a longitudinal axis (30; 134; 350; 415), and comprising first connecting means (28; 129; 216; 312; 434) - a protective cap assembly (24; 128; 212; 322; 410) comprising a protective cap (26; 126; 214; 324; 428) which comprises second connecting means (27; 127; 215; 326; 432), wherein the first and the second connecting means (28; 122; 216; 312; 434 and 27; 127; 215; 326; 432) are configured such that a displacement of the protective cap (26; 126; 214; 324; 428) relative to the housing (10; 110; 210; 414) allows the protective cap (26; 126; 214; 324; 428) to be removed from the housing, and wherein the protective cap (26; 126; 214; 324; 428) further comprises third connecting means (64; 140; 332; 444) for connecting to the shield (22; 116; 320; 446) of the medicament container (16; 112; 316; 450) such that removal of the protective cap (26; 126; 214; 324; 428) from the housing causes removal of the shield (22; 116; 320; 446) from the medicament container (16; 112; 316; 452), characterised in that the protective cap assembly (24; 128; 212; 322; 410) further comprises first disconnecting means (36, 38, 44, 52; 120, 130; 218, 230; 336, 340; 454, 462) configured to interact with corresponding second disconnecting means of the housing (14; 122; 220; 352; 420) and of the protective cap (63; 131; 246; 345; 428) such that a linear movement of an activation mechanism causes activation of the first disconnecting means (36, 38, 44, 52; 120, 130; 218, 230; 336, 340; 454, 462) of the protective cap assembly (24; 128; 212; 322; 410), which in turn causes the displacement of the protective cap (26; 126; 214; 324; 428) relative to the housing (10; 110; 210; 310; 414).