The Torrens system of registration of land titles, with ideals of reliability, simplicity, speed and low cost, originated in the state of South Australia in 1857 and became law there in 1858. It was introduced into the Malay States in 1891 by Sir William Maxwell and enacted as law for Singapore on 12th June 1956 with the passing of the Land Titles Ordinance. This paper studies the indefeasibility under this system.