An injection device having a distal and a proximal end comprising a housing (1) a needle protecting sleeve (2) longitudinally movable relative to the housing (1) a container holder (20) longitudinally movable relative to the housing (1) towards the proximal end of the device from a non-delivery position into a delivery position a needle protecting sleeve spring (5) operably coupled between the needle protecting sleeve (2) and the container holder (20) such that the needle protecting sleeve (2) can be longitudinally moved towards the distal end of the device from an initial position into an activating position and towards the proximal end of the device from the activating position into an end position. The invention is characterized in that the needle protecting sleeve spring(5) is strained by a first amount when the a needle protecting sleeve (2) moves from its initial position to the activating position, and by a second amount when the container holder (20) moves from its non-delivery position to the delivery position.
