diff --git a/evennia/contrib/simpledoor.py b/evennia/contrib/simpledoor.py
index 12a6b4ed49..ad6cc8b0a7 100644
--- a/evennia/contrib/simpledoor.py
+++ b/evennia/contrib/simpledoor.py
@@ -5,7 +5,11 @@ Contribution - Griatch 2016
 
 A simple two-way exit that represents a door that can be opened and
 closed. Can easily be expanded from to make it lockable, destroyable
-etc.
+etc.  Note that the simpledoor is based on Evennia locks, so it will
+not work for a superuser (which bypasses all locks) - the superuser
+will always appear to be able to close/open the door over and over
+without the locks stopping you. To use the door, use `@quell` or a
+non-superuser account.
 
 Installation: