The paper deals with the legislation of disinheritance in the Civil Code, especially the possibility of the testator to apply disinheritance to the descendants of disinherited heir. The current legislation allows the testator to apply disinheritance also to the descendants of disinherited heir, but yet distinguish whether disinherited heir survived the testator or not. At the same time formulation of the law only mentions exclusion of descendants of disinherited heir from their right to inheritance, but not from the right to legitimate portion. Different regulation applies to inheritance incompetence, which applies only to the incompetent heir and not to his descendants, even though it is a situation comparable with disinheritance.