Aneurysms of the hepatic artery are rare. The presenting features include abdominal pain, which may be associated with a mass. More acutely, patients present with signs of hypovolaemia secondary to rupture. The patient reported here presented with gastrointestinal haemorrhage of unknown aetiology. A computed tomography scan showed an aneurysm of a visceral artery. Subsequent angiography confirmed the presence of a leak in the hepatic artery. The patient refused surgical intervention and improved with supportive treatment only.