Disclosed herein is a refrigerator having a door rotatably hinged to a body of the refrigerator that prevents droop of the door at the side opposite to the axis of rotation of the door. A dyke formed on the rear surface of the door is provided with a roller, which is supported by the bottom surface of the storage compartment. A roller cap having a roller accommodation space to accommodate a part of the roller is connected to the dyke, and the roller is rotatably mounted to the roller cap.