Morgagni's hernia is an uncommon type of diaphragmatic hernia. These patients usually present in childhood but sometimes later in life. We report a case of 75 years old female who presented with epigastric discomfort and vomiting. She was diagnosed as a case of calculous cholecystitis and was treated with antibiotics but was not relieved. Further investigations revealed Morgagni's hernia. She was successfully managed by open surgical technique.