Abstract: A coupling element prepared for fastening between a oscillatory body and a tower wall of a tower of a wind turbine in order to influence relative motion between the oscillatory body and the tower wall in order to thereby influence vibration behavior of the tower, comprising a first fastening section for fastening to the oscillatory body and a second fastening section for fastening to the tower wall in order to establish mechanical coupling between the oscillatory body and the tower wall via the coupling element, the coupling permitting relative motion between the oscillatory body and the tower wall, and the relative motion having a first motion direction, in the case of which the first and second fastening sections move toward each other, and a second motion direction, in the case of which the first and second fastening sections move away from each other, and the coupling element having a spring element for spring-elastic coupling between the first and second fastening sections, the spring-elastic coupling be