diff --git a/image_classifier/image_classifier.py b/image_classifier/image_classifier.py
index 0c46c2f..36fb899 100755
--- a/image_classifier/image_classifier.py
+++ b/image_classifier/image_classifier.py
@@ -99,7 +99,8 @@ class image_classifier:
                 data["previous_user_comment"]=self.exif_info.get('user_comment')
             data['PeopleDetected'] = list()
         for person in people:
-            data['PeopleDetected'].append(person)
+            if person not in data['PeopleDetected']:
+                data['PeopleDetected'].append(person)
         self._log.debug(f"New 'user_comment': {json.dumps(data, indent=2)}")
         self.exif_info.set("user_comment", json.dumps(data))