diff --git a/src/conf.py b/src/conf.py
index 6dd8692ce..81a47dd7a 100644
--- a/src/conf.py
+++ b/src/conf.py
@@ -258,7 +258,7 @@ class SpaceSeparatedSetOfChannels(registry.SpaceSeparatedListOf):
         else:
             return ircmsgs.join(channel)
 
-def registerNetwork(name, password='', ssl=False, sasl_username = ''):
+def registerNetwork(name, password='', ssl=False, sasl_username=''):
     network = registerGroup(supybot.networks, name)
     registerGlobalValue(network, 'password', registry.String(password,
         _("""Determines what password will be used on %s.  Yes, we know that