One of the reforms of Constantine I (r. 306–337) was to assign one of the consuls to the city of Rome, and the other to Constantinople. Therefore, when the Roman Empire was divided into two halves on the death of Theodosius I (r. 379–395), the emperor of each half acquired the right of appointing one of the consuls—although on occasion an emperor did allow his colleague to appoint both consuls for various reasons. The consulship, bereft of any real power, continued to be a great honor, but the celebrations attending it – above all the chariot races – had come to involve considerable expense, which only a few citizens could afford, to the extent that part of the expense had to be covered by the state. In the 6th century, the consulship was increasingly sparsely given, until it was allowed to lapse under Justinian I (r. 527–565): the western consulship lapsed in 534, with Decius Paulinus the last holder, and the consulship of the East in 541, with Anicius Faustus Albinus Basilius. Consular dating had already been abolished in 537, when Justinian introduced dating by the emperor's regnal year and the indiction. In the eastern court, the appointment to consulship became a part of the rite of proclamation of a new emperor from Justin II (r. 565–578) on, and is last attested in the proclamation of the future Constans II (r. 641–668) as consul in 632. In the late 9th century, Emperor Leo the Wise (r. 886–912) finally abolished consular dating with Novel 94. By that time, the Greek titles for consul and ex-consul, ""hypatos"" and ""apo hypaton"", had been transformed to relatively lowly honorary dignities.