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 (11, 12) form a form fit by inclining the connecting elements (7, 9) 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 (11, 12) form a form fit by inclining the connecting elements (7, 9) 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.