The clamping clip described here includes a clamping band the two end portions of which overlap each other in the closed condition of the clamping clip. A tongue disposed on the overlapped inner band portion is received by a tongue channel provided on the overlapping outer band portion, the shape of the tongue channel being complementary to the shape of the tongue. The tongue has a root part in which the tongue width, measured in the axial direction of the clamping clip, decreases from the full clamping band width to a smaller value, and an end part adjoining the root part, in which the tongue width constantly has the smaller value.