In a 5.1-year-old girl who had been treated by surgical correction of biliary atresia and total orthotopic liver transplantation, extreme dietary selectivity was noted; this was treated by behaviour therapy. On entry in the rehabilitation centre, she manifested malnutrition along with a variety of gastro-enterologic complaints. The treatment consisted of a set of behavioural procedures such as stepwise expansion of the diet, verbal prompting, intermittent contingent attention and a list of agreements with a system of rewards; this led to the elimination of the dietary selectivity and to the consumption of a varied diet in a normal tempo.