Storage compartment for a vehicle comprising: a receptacle having an interior volume; a movable partition member that can be moved in a sliding direction and partitions said interior volume, and; a locking device for locking the partition member in the sliding direction, comprising a first locking member provided on the receptacle and suitable for engaging with a second locking member provided on the partition member; the partition member being movable in an unlocking direction perpendicular to the sliding direction between a locked position in which the first and second locking members engage and a sliding position in which the first and second locking members are disengaged from each other, and the compartment comprising an elastic member biasing the partition member towards the locked position.