The relations between the ordinary and the constitutional jurisdictions, with reference to a sentence of the Supreme Court, that implicitly abolished Art. 76 of DL no 1.094, 1975, due to the fact that, according to its opinion, the content of the rule was not compatible with the following Constitution. According to the Court, the preconstitutional precept lost validity and, as a consequence, and in use of its jurisdictional authority, it was estimated as not applicable, in this particular case. This sentence brought back a relevant argument, since in regards to preconstitutional laws, there is still no agreement in terms of doctrine and jurisprudence about the properly competent court to observe this phenomenon. In fact, to the Constitutional Court this is known as subsequent unconstitutionality, being that jurisdiction the only one that can establish the inapplicability or unconstitutionality of laws, whether they are pre or post-constitutional.