diff --git a/src/irclib.py b/src/irclib.py
index b7317685f..c7d497e4e 100644
--- a/src/irclib.py
+++ b/src/irclib.py
@@ -1305,8 +1305,6 @@ class Irc(IrcCommandDispatcher, log.Firewalled):
                 # echo-message is not implemented by server; let's emulate it
                 # here, just before sending it to the driver.
                 assert not msg.tagged('receivedAt')
-                msg.nick = self.nick
-                msg.prefix = self.prefix
                 self.feedMsg(msg, tag=False)
             else:
                 # I don't think we should do this.  Why should it matter?  If it's