We report a rare case of fistulation to the jejunum after percutaneous endoscopic gastrostomy (PEG). An 85-year-old man with previous cerebral infarction and swallowing disturbance underwent PEG. Nine months later, he developed a high fever and discharge around the gastrostomy button. He was diagnosed with aspiration pneumonia, and administered antibiotic therapy. Examination showed digestive fluid around the gastrostomy button. Gastrointestinal contrast-enhanced CT revealed a gastrojejunocutaneous fistula. The button was removed, and the fistula closed naturally. PEG was performed again. The patient’s postoperative course was uneventful. Gastrojejunocutaneous fistula should be considered in cases involving increased discharge from a gastrostomy fistula.