Shortly after his appointment, on 20 March 1208, Michael IV performed Theodore I Laskaris' coronation as emperor (Laskaris had already been acclaimed emperor in 1205). He also took the highly unusual move, contrary to both Byzantine tradition and Orthodox doctrine, of promising remission of sins for Laskaris' soldiers who fell in battle. It appears however that this pledge was of short duration. He died at Nicaea on 26 August 1212.[5]