There are certain standards of legal interpretation. Interpretive directives are heterogeneous—both in terms of the issues they address and of the form. Not all authors consider the canons of interpretation to be norms like any other ones. Moreover, some claim that the term “incorrect interpretation” refers only to an arbitrarily chosen concept. I intend to investigate whether, despite the objections raised, interpretative directives can be said to have the status of legal norms. I wonder whether the so-called law of interpretation (...) (LoI), can provide a normative key to assess the correctness of the interpretation of legal texts. Text raises important questions concerning LoI. Firstly, the question of the status of interpretative directives and the problem of their defeasibility. Second, it refers to the problem of compliance with interpretative directives and the consequences of their violation, drawing attention to the two contexts of legal interpretation (the context of discovery and justification) and to the fact that canons of interpretation can constitute a standard for the correctness of the interpretative procedure and for its result. Third, this paper refers to the problem of vagueness of interpretative directives, analysing the advantages of maintaining it to a certain extent, as well as the possibilities of reducing it in the rest. The fourth issue analysed is the multiplicity of canons and the lack of a defined hierarchy of them. I conclude by pointing out that LoI should provide a model by which to assess the correctness of an interpretation. (shrink)