On June 29, 2018 in Dziennik Urzędowy “Monitor Polski” (the Official Gazette of the Republic of Poland) were published two announcements by the President of the Republic of Poland – from May 24, 2018, on the vacant positions of the judges in the Supreme Court and from May 28, 2018 on the vacant positions of the judge in the Supreme Administrative Court. The obligation to announce the number of vacant judges’ positions is a result of changes in the structure of the Supreme Court introduced by the new law of 8 December 2017 and the obligation to apply these provisions to the judges of the Supreme Administrative Court. The controversy is aroused by the fact that the published announcements were not countersigned – although this competence is not included in the catalog of presidential prerogatives, exempted from the obligation of co-signing by the Prime Minister. The analysis of the constitutional shape of the countersignature and the practice of using by the President of his competences will allow to answer the question whether the President’s announcements require for their validity the signature of the Prime Minister’s or are they exempt from this requirement. In the light of the doctrinal reflections, the recognition of the announcement of the President of the Republic of Poland on vacant judicial positions in the Supreme Court and the Supreme Administrative Court may be considered as a derivative or analogous competence to the presidential prerogative of appointing judges. However, this stands in contradiction with the Constitutional Tribunal jurisprudence, which excludes the possibility of a broad interpretation of the constitutional catalog of prerogatives. Nevertheless, due to the informative, non-normative character of the announcements of the President, the issue of qualifying them to the catalog of official acts, for which the countersignature is required, raises reasonable doubts.