Mirizzi syndrome is a rare complication of gallstones with an incidence of less than 1% per year in Western countries. Imaging and endoscopy play a key role in its diagnosis. CT scan helps to eliminate any malignant lesion of the bile ducts or liver hence comes in handy in the confirmation of Mirizzi syndrome. We hereby report a case of a Mirizzi syndrome complicating acute cholecystitis in a 41-year-old patient without any history of disease.