Abstract: A bearing of a wind turbine is provided. The bearing includes an annular stationary raceway rigidly connected to a first component of the wind turbine, and an annular rotating raceway rigidly connected to a second component of the wind turbine. Both raceways are arranged such that their axes of symmetry coincide. Each raceway includes a rear surface which is directed towards the first component of the wind turbine, and a front surface, which is directed to the second component of the wind turbine. The rotating raceway is selectively reinforced by reinforcement means which are attached on the front surface of the rotating raceway and/or on the rear surface of the rotating raceway. The bearing can be a main bearing or a pitch bearing of a wind turbine. A wind turbine for generating electricity including such a bearing is also provided.