diff --git a/lib/on_irc/connection.rb b/lib/on_irc/connection.rb
index e3c5c51..58190d0 100644
--- a/lib/on_irc/connection.rb
+++ b/lib/on_irc/connection.rb
@@ -8,7 +8,7 @@ def initialize(server)
 
     ## EventMachine callbacks
     def post_init
-      send_data("USER #{@server.ident || @server.irc.ident} * * #{@server.realname || @server.irc.realname}\r\n")
+      send_data("USER #{@server.ident || @server.irc.ident} * * :#{@server.realname || @server.irc.realname}\r\n")
       send_data("NICK #{@server.nick || @server.irc.nick}\r\n")
     rescue => e
       p e