Locking device with compensation element

A locking device for a positional fixing of a displaceable adjusting element for a selector shaft of a mechanical gear transmission of a motor vehicle comprising an outer housing (2) and, displaceably guided therein, a locking pin (8) loaded at one end by a compression spring (14) which is supported on a bottom (15) of the outer housing (2) and causes a stroke movement of the locking pin (8), a spherical locking element (11) which is retained in the locking pin (8) in an end thereof facing away from the compression spring (14) and which, in an installed state of the locking device locks a movable adjusting element by positive engagement, the locking device further comprising an electric switching element (25) which can be activated by an actuating element arranged on the locking pin (8), characterized in that the actuating element comprises a compensation element (16a to 16d) which permits a manual adjustment of a length dimension between the locking pin (8) and the switching element (25).