1 files changed, 1 insertions, 1 deletions
diff --git a/synapse/rest/admin/media.py b/synapse/rest/admin/media.py
index 3a445d6eed..ee75095c0e 100644
--- a/synapse/rest/admin/media.py
+++ b/synapse/rest/admin/media.py
@@ -36,7 +36,7 @@ class QuarantineMediaInRoom(RestServlet):
         historical_admin_path_patterns("/room/(?P<room_id>[^/]+)/media/quarantine")
         +
         # This path kept around for legacy reasons
-        historical_admin_path_patterns("/quarantine_media/(?P<room_id>![^/]+)")
+        historical_admin_path_patterns("/quarantine_media/(?P<room_id>[^/]+)")
     )
 
     def __init__(self, hs):