Tourette's syndrome (TS) is a motoric disorder characterised by multiple motor and vocal tics. The treatment for patients with moderate to severe TS includes antipsychotic medication. A case report is described in which a 20 year-old male had taken antipsychotic medication since the age of five, due to TS. The initial treatment consisted of pimozide and risperidone, both of which had an unsatisfactorily efficacy on tics and side effects in the form of weight gain and sedation. The patient is now treated with aripiprazole and there is a marked reduction of tics and no side effects.