diff --git a/plugins/ChannelLogger.py b/plugins/ChannelLogger.py
index f31f65c66..e32788853 100644
--- a/plugins/ChannelLogger.py
+++ b/plugins/ChannelLogger.py
@@ -44,12 +44,13 @@ import debug
 import world
 import irclib
 import ircmsgs
+import ircutils
 
 ###
 # Logger: Handles logging of IRC channels to files.
 ###
 class ChannelLogger(irclib.IrcCallback):
-    logs = {}
+    logs = ircutils.IrcDict()
     actionre = re.compile('\x01ACTION (.*)\x01')
     def __init__(self):
         self.laststate = None
@@ -63,7 +64,7 @@ class ChannelLogger(irclib.IrcCallback):
     def reset(self):
         for log in self.logs.itervalues():
             log.close()
-        self.logs = {}
+        self.logs = ircutils.IrcDict()
 
     def flush(self):
         for log in self.logs.itervalues():
diff --git a/plugins/Relay.py b/plugins/Relay.py
index 7dd8e46d2..8f82ff484 100644
--- a/plugins/Relay.py
+++ b/plugins/Relay.py
@@ -178,7 +178,7 @@ class Relay(callbacks.Privmsg):
         channels.
         """
         channel = privmsgs.getArgs(args)
-        self.channels.add(channel)
+        self.channels.add(ircutils.toLower(channel))
         for otherIrc in self.ircs.itervalues():
             if channel not in otherIrc.state.channels:
                 otherIrc.queueMsg(ircmsgs.join(channel))
@@ -193,7 +193,7 @@ class Relay(callbacks.Privmsg):
         channel.
         """
         channel = privmsgs.getArgs(args)
-        self.channels.remove(channel)
+        self.channels.remove(ircutils.toLower(channel))
         for otherIrc in self.ircs.itervalues():
             if channel in otherIrc.state.channels:
                 otherIrc.queueMsg(ircmsgs.part(channel))
diff --git a/src/ircdb.py b/src/ircdb.py
index 4e3d91291..85eab8c4f 100644
--- a/src/ircdb.py
+++ b/src/ircdb.py
@@ -252,7 +252,7 @@ class UsersDictionary(object):
         fd.close()
         self.dict = eval(normalize(s))
         self.cache = {} # hostmasks to nicks.
-        self.revcache = {} # nicks to hostmasks.
+        self.revcache = ircutils.IrcDict() # nicks to hostmasks.
 
     def resetCache(self, s):
         if s in self.cache: