diff --git a/docker-compose.maintenance.yml b/docker-compose.maintenance.yml
index 56da9be52..831bb3f4a 100644
--- a/docker-compose.maintenance.yml
+++ b/docker-compose.maintenance.yml
@@ -1,3 +1,5 @@
+# Todo: !!! This file seems related to our old maintenance worker for MongoDB and has to be refactored in case of using it !!!
+
 version: "3.4"
 
 services: