The second part of the Article 14 of the Criminal Code of the Russian Federation comprises a provision that an insignificant act that doesn’t pose a threat to the society but having formal characteristics of any criminal act provided by the Criminal Code of the Russian Federation is not deemed to be a crime. With the aim to correct and uniformed application of the Criminal Code’s provision the article deals with characteristics and forms of insignificance of these acts. The analysis of scientific literature and the practice of the Supreme Court of the Russian Federation gave the author an opportunity to mark out the following characteristics of the insignificance of the act. Firstly, it is a subjective characteristic. The act should be committed deliberately. Secondly, a punishment for this act should be provided only by the Criminal Code of the Russian Federation. The forms of the insignificance of the act are committing acts manifesting themselves in (1) producing and transporting physical objects in area: weapons, property items and valuables, handing over as a bribe, documents containing false data; (2) infringing upon personal non-property rights such as short-term deprivation of liberty, violation of inviolability of home, inviolability of private life; as well as committing acts, having characteristics of the corpus delicti of the crimes against the interests of public service when consequences are described by evaluative characteristics.