 Constantine seems to have reorientated the building, changing the site of the principal entrance and adding a new northern apse.With these changes, including the great statue in the west apse, Constantine publicly and visibly declared his overthrow of his vanquished adversary.Precise dating of the statue itself is problematical; it has been suggested that a date of 312–315 for the initial creation of the statue is likely from political considerations, whilst a substantial reworking of the features some time after 325 is indicated on art-historical grounds.