A self-locking belt retractor for seat belts having a belt shaft rotatably mounted in a housing frame and having a belt-webbing-sensitive actuation mechanism A control plate that can be deflected with a relative rotation between the belt shaft and the control plate The control plate bears a two-arm eccentrically mounted inertial mass A control clip is rotatably frictionally mounted on a bearing surface for the belt shaft. An actuator of the control plate engages two legs of control clip and forms contact surfaces for the legs for shifting the control plate in belt retracting direction as well as in belt extending direction. One of the legs projects during rotation of the control plate in the belt retracting direction into the pivoting path of a pivot arm of the inertial mass and releases the inertial mass with a rotation of the control plate in the belt extending direction.