Device for making bed (1), which device comprises four parts (3a, 3a', 3b, 3b'), which parts are configured to be fixed at the corner areas of a mattress (2) of the bed, wherein each of the parts of the device comprise an upper section (4) with a surface (7) configured to be placed against an upper surface of the mattress and a lower section (5) with a surface (10) configured to be placed against a lower surface of the mattress, and a fixing device (13) for fixing a sheet to the part, which fixing device is connected to the part with a resilient biasing device (12), which biasing device allows the fixing means to be moved away from the part and to re-turn to the part once released.