diff --git a/irc.py b/irc.py
index 217f40712c1bc597b1c10cdac7c3768a5b5a525f..68b2658d3fc43b7ce09c12c792558cc4d7b11932 100644
--- a/irc.py
+++ b/irc.py
@@ -321,7 +321,7 @@ class IRC(threading.Thread):
         self.pluginManager.event("action", channel, self.config["nickname"], action)
     
     def doQuit(self, message=None):
-        self.sendLine("QUIT " + (message or ""))
+        self.sendLine("QUIT :" + (message or ""))
         self.pluginManager.event("quit", self.config["nickname"], (message or ""))
         self.running = False