Connecting system for reversibly connecting floor covering segments for forming a floor covering , in particular a construction road, wherein the connecting system has a first connecting element which has a tongue for producing a tongue-and-groove connection or bung connection, wherein the connecting system has a second connecting element which has a groove for at least partially receiving the tongue for producing the tongue-and-groove connection or bung connection, wherein the first connecting element has at least one first form-fitting element and the second connecting element has, outside the groove , at least one second form-fitting element corresponding to the first form-fitting element , and wherein the connecting system is configured such that, when the tongue is at least partially inserted into the groove , the form-fitting elements form a form fit by inclining the connecting elements with respect to one another, which form fit positively blocks a translational movement of the tongue out of the groove , wherein a first wall delimiting the groove has a free edge terminating with a groove mouth of the groove , while a second wall which is opposite the first wall and delimits the groove is provided on that side of the groove which faces away from the free edge , which second wall has a first section which delimits the groove , and a second section which is provided on that side of the groove mouth which faces away from the groove and which has the second form-fitting element , characterized in that the second section has a projection with respect to an alignment of the surface of the second wall in the first section , wherein the projection forms a support for the first connecting element . wherein the connecting system has a first connecting element which has a tongue for producing a tongue-and-groove connection or bung connection, wherein the connecting system has a second connecting element which has a groove for at least partially receiving the tongue for producing the tongue-and-groove connection or bung connection, wherein the first connecting element has at least one first form-fitting element and the second connecting element has, outside the groove , at least one second form-fitting element corresponding to the first form-fitting element , and wherein the connecting system is configured such that, when the tongue is at least partially inserted into the groove , the form-fitting elements form a form fit by inclining the connecting elements with respect to one another, which form fit positively blocks a translational movement of the tongue out of the groove , wherein a first wall delimiting the groove has a free edge terminating with a groove mouth of the groove , while a second wall which is opposite the first wall and delimits the groove is provided on that side of the groove which faces away from the free edge , which second wall has a first section which delimits the groove , and a second section which is provided on that side of the groove mouth which faces away from the groove and which has the second form-fitting element , characterized in that the second section has a projection with respect to an alignment of the surface of the second wall in the first section , wherein the projection forms a support for the first connecting element . <EOS>