Abstract: A cover element for preventing the use of certain urinals, such as those which are out of use. The cover element temporarily covers an open area of a urinal bounded by a urinal edge, which area is accessible to a user. The dimension of the cover element is at least such that substantially the entire open area of the urinal can be covered therewith. The cover element has at least two lips which can be moved against a spring force from a first position to a second secured position, such that the lips are positioned in clamping contact against an inner side of the urinal edge. This serves to attach the cover element over the open area of the urinal.