The Perth Agreement is an agreement made by the prime ministers of the 16 Commonwealth realms during the biennial Commonwealth Heads of Government Meeting in October 2011 in Perth, Western Australia, concerning amendments to the royal succession laws, namely, replacing male-preference primogeniture, under which male descendants take precedence over females in the line of succession, with absolute primogeniture; ending the disqualification of those married to Roman Catholics; and limiting the number of individuals in line to the throne requiring permission from the sovereign to marry. However, the ban on Catholics and other non-Protestants becoming sovereign and the requirement for the sovereign to be in communion with the Church of England remained.