diff --git a/src/IRCChannel.py b/src/IRCChannel.py
index 49d103a1..e241e374 100644
--- a/src/IRCChannel.py
+++ b/src/IRCChannel.py
@@ -127,7 +127,7 @@ class Channel(IRCObject.Object):
         self.server.send_mode(self.name, "-b", hostmask)
     def send_topic(self, topic):
         self.server.send_topic(self.name, topic)
-    def send_part(reason=None):
+    def send_part(self, reason=None):
         self.server.send_part(self.name, reason)
 
     def mode_or_above(self, user, mode):