An activation assembly for a medicament delivery device is presented having a delivery member cover provided with legs and configured to be biased in a proximal direction, a movable sleeve configured to be received between the legs, and an activation sleeve configured to be biased in the proximal direction, wherein the delivery member cover is configured to be moved in an axial direction between a first position and a second position, wherein movement of the delivery member cover from the first position to the second position causes movement of the movable sleeve from a first movable sleeve position to a second movable sleeve position. The delivery member cover axially displaces the activation sleeve in a distal direction when the delivery member cover moves towards the second position, thereby causing a first actuation of a sensor. The activation sleeve is configured to move in the proximal direction when the delivery member cover returns from the second position to the first position, thereby providing a second actuation of the sensor.
