A reflection article is proposed that deals with the crime in which public servants may incur, of "undue Interest in the conclusion of contracts", having some Interest different from the "general interest", in a state contracting process, elucidating if this , in fact, it has the character of "crime" from the point of view of the typicity or if it merely corresponds to an action with fiscal and / or disciplinary sanction, starting from the conceptualization of the aforementioned crime from the analysis of national doctrinants and the interpretation that the Supreme Court of Justice (in its jurisprudence), in the development of the conceptualization that gives it as a crime, since there are those who argue from their unlawfulness for infringement among others of the criminal law of act, considering that with the punishable is sanctioned only the spirit or intentionality of the author, while others argue that the typing is trivial since "undue interest" typifies other punishable behaviors.