bot doesn't know itself for force prefixing when it has renamed itself

from irc:
(1:30:04 PM) Morbus: bot_m920: help
(1:30:14 PM) Morbus: bot_m920: help?
(1:30:22 PM) Morbus: well, it's supposed to
(1:30:23 PM) Morbus: 123456
(1:30:25 PM) Morbus: 12345
(1:30:29 PM) bot_m920: http://drupal.org/node/123456 => => 1 IRC mention
(1:30:32 PM) bot_m920: http://drupal.org/node/12345 => How do I log in as admin? => 1 IRC mention
(1:30:43 PM) Morbus: hrm. aaah. force prefixing doesn't work when it has renamed itself.
(1:30:44 PM) Morbus: interesting.
(1:30:51 PM) Morbus: that's a bug. i'm moving furniture at the moment.