diff --git a/plugins/NickAuth/plugin.py b/plugins/NickAuth/plugin.py
index a4a0e603b..ed8e6408a 100644
--- a/plugins/NickAuth/plugin.py
+++ b/plugins/NickAuth/plugin.py
@@ -187,6 +187,7 @@ class NickAuth(callbacks.Plugin):
 
     def doJoin(self, irc, msg):
         if len(msg.args) < 2:
+            # extended-join is not supported
             return
 
         account = msg.args[1]