Katarzyna Hewner sends a correction to the editorial office of the semi-annual "Nasza Przeszłość" in Krakow in connection with the article from volume 94, entitled "Piotr Włostowic or Piotr Wszeborowic? About the foundation and founder of the Norbertine monastery in Strzelno". This article concerned the dating of Romanesque architecture in Strzelno based on research on the construction and artistic workshop. The author noticed an error in the fragment regarding the dating of the basilica's presbytery and the beginning of the construction of the rotunda of St. Procopius, who influenced the logical coherence of the argumentation. In the revised version, this fragment would sound different, which would influence the determination of the time of construction of both churches. The author apologizes for this omission and its consequences for readers interested in the history of the Strzelno monastery.