diff --git a/server/entertainment_decider/models.py b/server/entertainment_decider/models.py
index da936fa..7e67bb7 100644
--- a/server/entertainment_decider/models.py
+++ b/server/entertainment_decider/models.py
@@ -629,7 +629,7 @@ class MediaThumbnail(db.Entity):
         bytes,
         default=None,
         nullable=True,
-        lazy=True,
+        lazy=True,  # do not always preload huge image data
     )
 
     elements: Set[MediaElement] = orm.Set(lambda: MediaElement)