1 files changed, 1 insertions, 1 deletions

diff --git a/synapse/handlers/admin.py b/synapse/handlers/admin.py

index 2c2baeac67..d06f8e3296 100644
--- a/synapse/handlers/admin.py
+++ b/synapse/handlers/admin.py
@@ -283,7 +283,7 @@ class AdminHandler:
                 start, limit, user_id
             )
             for media in media_ids:
-                writer.write_media_id(media["media_id"], media)
+                writer.write_media_id(media.media_id, attr.asdict(media))
 
             logger.info(
                 "[%s] Written %d media_ids of %s",