In the present paper the author considers a challenge to libertarianism posed by G.A. Cohen. The charge issued by Cohen says that libertarianism defines freedom in terms of justice and justice in terms of freedom. The paper deals with an aspect of this charge as expressed by one of Cohen’s thought experiments according to which it is not the case that the answer to the question whether person B forces person A to do φ depends on whether person B’s actions are legitimate or not. Employing the Hohfeldian analysis of fundamental jural conceptions, the author demonstrates that if person B’s actions are legitimate, then making person A to do φ cannot, at pains of contradiction, be considered forcing. If person B is at a liberty to...