The invention relates to an autoinjector comprising: a lower body a central body (1) secured to the lower body (10) and an actuator sleeve (11) which can be moved inside the lower body (10) between a projecting position, in which the actuator sleeve (11) projects at least partially from the lower body (10) and an actuation position in which the actuator sleeve (11) is moved axially into the lower body (10). The actuator sleeve (11) comprises a flexible tab (110) that can deform (i) radially and (ii) laterally in relation to the central body (1) when the actuator sleeve is moved from the projecting position into the actuation position and subsequently from the actuation position back into the projecting position.
