diff --git a/src/ircbot/ircworker.py b/src/ircbot/ircworker.py
index 916fcbc4..3e683057 100644
--- a/src/ircbot/ircworker.py
+++ b/src/ircbot/ircworker.py
@@ -11,7 +11,7 @@ def do_work():
     """
     config = {
         'nick': settings.IRCBOT_NICK,
-        'autojoins': [set(settings.IRCBOT_CHANNELS.values())],
+        'autojoins': list(set(settings.IRCBOT_CHANNELS.values())),
         'host': settings.IRCBOT_SERVER_HOSTNAME,
         'port': settings.IRCBOT_SERVER_PORT,
         'ssl': settings.IRCBOT_SERVER_USETLS,