Motor vehicle door, having a frame which defines a window opening, wherein the window opening is delimited, in relation to a door longitudinal direction, by a first bar and a second bar spaced apart from the first bar; having a window-raising system with a first guide rail arranged, in relation to the door longitudinal direction, in the region of the first bar, a first slide piece guided on the first guide rail, a second guide rail arranged, in relation to the door longitudinal direction, in the region of the second bar, a second slide piece guided on the second guide rail, a cable drum and a drive cable which can be driven by means of the cable drum, is coupled to the slide pieces (4; 5) and is guided in a Bowden cable sheath between an upper end region of the second guide rail and a connection region located between an upper end region of the first guide rail and a lower end region of the first guide rail, wherein the Bowden cable sheath is attached in each case in the upper end region of the second guide rail and in the connection region of the first guide rail; having a window pane coupled to the slide pieces (4; 5) of the window-raising system and comprising a rear edge guided along the second bar and a front edge extending in an inclined manner with respect to the rear edge; wherein the window pane can be moved into a closed position by means of the slide pieces (4; 5), the window pane covering the window opening in the closed position, wherein when the window pane is in the closed position the first slide piece is arranged in the upper end region of the first guide rail and the second slide piece is arranged in the upper end region of the second guide rail; and wherein the first guide rail has a first stop in the upper end region and the second guide rail has a second stop in the upper end region, wherein when the window pane is in the closed position the second slide piece lies against the second stop and the first slide piece is arranged at a predetermined distance to the first stop. having a frame which defines a window opening, wherein the window opening is delimited, in relation to a door longitudinal direction, by a first bar and a second bar spaced apart from the first bar; having a window-raising system with a first guide rail arranged, in relation to the door longitudinal direction, in the region of the first bar, a first slide piece guided on the first guide rail, a second guide rail arranged, in relation to the door longitudinal direction, in the region of the second bar, a second slide piece guided on the second guide rail, a cable drum and a drive cable which can be driven by means of the cable drum, is coupled to the slide pieces (4; 5) and is guided in a Bowden cable sheath between an upper end region of the second guide rail and a connection region located between an upper end region of the first guide rail and a lower end region of the first guide rail, wherein the Bowden cable sheath is attached in each case in the upper end region of the second guide rail and in the connection region of the first guide rail; having a window pane coupled to the slide pieces (4; 5) of the window-raising system and comprising a rear edge guided along the second bar and a front edge extending in an inclined manner with respect to the rear edge; wherein the window pane can be moved into a closed position by means of the slide pieces (4; 5), the window pane covering the window opening in the closed position, wherein when the window pane is in the closed position the first slide piece is arranged in the upper end region of the first guide rail and the second slide piece is arranged in the upper end region of the second guide rail; and wherein the first guide rail has a first stop in the upper end region and the second guide rail has a second stop in the upper end region, wherein when the window pane is in the closed position the second slide piece lies against the second stop and the first slide piece is arranged at a predetermined distance to the first stop.