Rotor's syndrome is a rare entity in our Country. We report here a case of this anomaly in a seventeen years old girl with jaundice from birth, normal biliary channels, elevated urinary coproporphyrins and retarded excretion of bromosulphalein with normal histology of the liver. The familiar study showed that the mother, but not the brothers, had a similar defect in excretion of bromosulphalein.