The Aboriginals Ordinance 1939 (Act No. 4/1939) amended the Aboriginals Ordinance 1918. The 1918 Ordinance had already undergone amendments in 1924, 1927, 1928, 1930,1933, 1936 and 1937. The 1939 amendment was significant because it brought about the abolition of the role of Chief Protector, replacing it with the Director of Native Affairs. It commenced on 5 April 1939.