Wall ruptures after myocardial infarction are rare. Early diagnosis and treatment decrease mortality significantly. In this article, we present a 68-year-old female patient who admitted to our cardiology clinic due to inferior myocardial infarction one month ago and was placed a stent to right coronary artery with primary percutaneous transluminal coronary angioplasty. Patient was operated under elective conditions. Coronary artery bypass graft operation was performed to the left coronary arterial system. Right coronary artery distal bed was not operated due to ungraftable conditions. Right ventricular wall spontaneously ruptured during venous decannulation. Recannulation was performed and the ruptured area was repaired using pericardial mesh. Patient was discharged at seventh postoperative day without any problem.