diff --git a/plexpy/activity_processor.py b/plexpy/activity_processor.py
index 4a05e829..ee161aab 100644
--- a/plexpy/activity_processor.py
+++ b/plexpy/activity_processor.py
@@ -63,6 +63,7 @@ class ActivityProcessor(object):
                       'grandparent_rating_key': session.get('grandparent_rating_key', ''),
                       'originally_available_at': session.get('originally_available_at', ''),
                       'added_at': session.get('added_at', ''),
+                      'guid': session.get('guid', ''),
                       'view_offset': session.get('view_offset', ''),
                       'duration': session.get('duration', ''),
                       'video_decision': session.get('video_decision', ''),