diff --git a/protocols/hybrid.py b/protocols/hybrid.py
index 55c9cb9..fe19d8a 100644
--- a/protocols/hybrid.py
+++ b/protocols/hybrid.py
@@ -198,7 +198,7 @@ class HybridProtocol(TS6Protocol):
     def handle_tburst(self, numeric, command, args):
         """Handles incoming topic burst (TBURST) commands."""
         # <- :0UY TBURST 1459308205 #testchan 1459309379 dan!~d@localhost :sdf
-        channel = args[1].lower()
+        channel = self.irc.toLower(args[1])
         ts = args[2]
         setter = args[3]
         topic = args[-1]
diff --git a/protocols/unreal.py b/protocols/unreal.py
index 8e049e2..0e6a083 100644
--- a/protocols/unreal.py
+++ b/protocols/unreal.py
@@ -841,7 +841,7 @@ class UnrealProtocol(TS6BaseProtocol):
         """Handles incoming INVITEs."""
         # <- :GL INVITE PyLink-devel :#a
         target = self._getUid(args[0])
-        channel = args[1].lower()
+        channel = self.irc.toLower(args[1])
         # We don't actually need to process this; it's just something plugins/hooks can use
         return {'target': target, 'channel': channel}