A rail securing system comprising at least one angle guide plate allows a perfect retention of the tension clamp in its pre-assembly position and facilitates final assembly. The angle guide plate has recess, which is designed as a seat for a free end section of a spring arm of a tension clamp to be mounted on the angle guide plate, wherein the recess engages around the end section by less than half of its circumference. The transition between the recess and the section of the angle guide plate which follows on from the recess in the direction of the rail is formed such as to be free of any abrupt change, so that the tension clamp can be pushed in a simple manner on the angle guide plate into its assembly position.