adjustment plate gache a motor vehicle lock

Wafer (12) for the position of a striker plate adjustment (11) of a motor vehicle lock intended to be fixed on the body of said vehicle by screwing means whose stems pass through recesses in the wafer (12 ) and holes in the bodywork, characterized in that it comprises at least one first stop (19, 20) preventing the translation of the striker plate (11) relative to the wafer (12) in a first preferred direction (Ox ), said first stop (19, 20) being frangible to allow, once severed, the translation of the striker plate (11) relative to the wafer (12) according to the first preferred direction (Ox).