Notion of anonymous fault (faute anonymee) was lately recognised by the Supreme Court of Poland as a way of interpretation of the liability exclusion prerequisite of the fault of the third party in article 435 § 1 of the Polish Civil Code. Since the wording of the prerequisite is identical in other provisions of the Polish Civil Code related to torts based on risk, there arises a question whether one should employ the notion of anonymous fault in interpretation of these provisions. The article considers the issue in the context of principles of legal interpretation and views of the legal scholars and jurisprudence.