diff --git a/README.md b/README.md
index d6dfcaa..e122948 100644
--- a/README.md
+++ b/README.md
@@ -84,6 +84,7 @@ Commands               | Explanation
 /righty                | Makes player right-handed. If done during play, it will only be applied after play has stopped.
 /rules                 | Shows current offside/icing rule settings.
 /admin *PASSWORD*      | Logs in as administrator, if the password is correct.
+/chatextend <on/off>   | Show some additional chat messages when players join or leave teams in matches
 
 ### Administrators only