A case of 42 years old male patient clinically suggestive of peritonitis due to appendicular perforation underwent exploratory laparotomy revealed normal appendix along with a large caecal perforation without any underlying primary or secondary pathologies. Caecostomy with Malecot's catheter with purse string sutures around the catheter was put in place. The suspicion of inadequate differential diagnosis later on revealed it as non specific caecal ulcer (NSCU) in the histopathology sample of perforated ulcer.