diff --git a/src/irc.coffee b/src/irc.coffee
index 8a82054..bfae6b5 100644
--- a/src/irc.coffee
+++ b/src/irc.coffee
@@ -44,6 +44,7 @@ class IrcBot extends Adapter
       usessl:   process.env.HUBOT_IRC_USESSL?
 
     client_options =
+      userName: process.env.HUBOT_IRC_USERNAME
       password: options.password,
       debug: options.debug,
       port: options.port,