A device for adjusting a reticle, comprising: —an adjustable reticle, —an adjusting means set up to adjust the reticle, wherein the adjusting means includes an adjustment actuation element, movably mounted in an adjustment movement degree of freedom, —a blocking means assigned to the adjusting means set up to block movements of the adjustment actuation element, wherein the blocking means includes a blocking element transferrable into a blocking position, in which this effects that movements of the adjustment actuation element are blocked in the adjustment movement degree of freedom, and into an unblocking position, in which this effects that movements of the adjustment actuation element are not blocked in the adjustment movement degree of freedom, wherein the blocking element, in the blocking position, cooperates frictionally with the adjustment actuation element or with a component of the adjusting means coupled with the adjustment actuation element.