A housing for an injection device, the housing comprising: - a body to accommodate a drive mechanism having at least a piston rod to operably engage with a piston of a cartridge filled with a liquid injectable medicament, - a cartridge holder having a cartridge receiving space to accommodate the cartridge, - wherein the cartridge holder and the body are of substantially tubular shape and extend along an axial direction, - wherein the cartridge holder has an insert section at a proximal end, - wherein the body has a receptacle at a distal end to receive the insert section of the cartridge holder, - wherein the cartridge holder comprises at least a first latch element located on the insert section and wherein the body comprises at least a second latch element located in the receptacle and protruding radially inwardly from a side wall section of the receptacle, - wherein the first latch element and the second latch element are mutually engageable for fixing the cartridge holder to the body, - wherein a radial extension of the first latch element is less than a thickness of the side wall (22, 32) of the insert section or of the receptacle, - wherein a radial protrusion of the second latch element is less than a thickness of the side wall sections (22, 32) of the insert section or of the receptacle, characterized in that - the first latch element is located at an axial distance from a proximal end of the cartridge receiving space that is less than 25% of the axial elongation of the insert section and - wherein an inside facing portion of the insert section is tapered towards the proximal end and comprises a tapered section. - a body to accommodate a drive mechanism having at least a piston rod to operably engage with a piston of a cartridge filled with a liquid injectable medicament, - a cartridge holder having a cartridge receiving space to accommodate the cartridge, - wherein the cartridge holder and the body are of substantially tubular shape and extend along an axial direction, - wherein the cartridge holder has an insert section at a proximal end, - wherein the body has a receptacle at a distal end to receive the insert section of the cartridge holder, - wherein the cartridge holder comprises at least a first latch element located on the insert section and wherein the body comprises at least a second latch element located in the receptacle and protruding radially inwardly from a side wall section of the receptacle, - wherein the first latch element and the second latch element are mutually engageable for fixing the cartridge holder to the body, - wherein a radial extension of the first latch element is less than a thickness of the side wall (22, 32) of the insert section or of the receptacle, - wherein a radial protrusion of the second latch element is less than a thickness of the side wall sections (22, 32) of the insert section or of the receptacle, characterized in that - the first latch element is located at an axial distance from a proximal end of the cartridge receiving space that is less than 25% of the axial elongation of the insert section and - wherein an inside facing portion of the insert section is tapered towards the proximal end and comprises a tapered section.