The decree Licet de evitanda discordia issued by the Third Lateran Council in 1179 abolished the rule of unanimity in favour of the rule of the majority of two thirds.
Das Dekret Licet de evitanda discordia des Dritten Laterankonzils von 1179 schaffte die Einstimmigkeitsregel zugunsten der Zweidrittelmehrheit ab.