The invention relates to a safety ski binding with a binding body (3) which is guided in the longitudinal direction of the ski in a guide rail (2) and can be fixed in different positions by means of an adjustment ratchet (4) and which is subject to the action of at least one press-on spring (5) which acts in the alongitudinal direction of the ski and is provided with a design for compensating any play between the binding body (3) and the guide rail (2). This press-on spring (5) is located in a spring cage (6) which is provided with a transverse wall (6a) and with a floor (6b). …<??>In order to allow for a constant press-on pressure in this binding, the invention provides for the spring cage (6) to have at least two longitudinal ribs (6e) which extend on both sides of the floor (6b) and are designed to be of downward-convex shape in a section (6e1) of their longitudinal direction and to be resilient. …<IMAGE>…