The article reports on the changes made by Aegidius of Paris on Peter Riga's "Aurora." Aegidius has expressed an opinion that Riga's work is in need of repair and he believes that he is the one to improve it through the addition of verses and the rearrangement of some of its components. He also added a prose prologue to Riga's "Euangelium," which is found in 13 manuscripts that represent different arrangement of the biblical books in "Aurora."