The present invention relates to a device for anchoring a working machine to a foundation, which device comprises a receiving plate (1) for placing on a foundation (6), a counter-plate (2) for casting into the foundation (6), a hollow tube (3) which connects the receiving plate (1) to the counter-plate (2) and which is accessible to its inner side from that side of the receiving plate (1) facing away from the counter-plate (2), and a tension element (4) for inserting into the hollow tube (3), wherein the tension element (4) can be releasably anchored to the counter-plate (2) by a rotary movement. The device is characterized in that an anti-rotation element (5) is present which is connected to an outer contour of the tension element (4) and arranges the latter in a rotationally locked manner. This device prevents unintended release of the tension element (4) from an anchoring means connected to the counter-plate (2).