user changename appears to do nothing

[Mikaela]

INFO 2014-05-09T14:21:27 supybot user list called in private by "Mikaela!mkaysi@unaffiliated/mikaela".
INFO 2014-05-09T14:21:33 supybot help called in private by "Mikaela!mkaysi@unaffiliated/mikaela".
INFO 2014-05-09T14:21:39 supybot help called in private by "Mikaela!mkaysi@unaffiliated/mikaela".
INFO 2014-05-09T14:21:53 supybot user changename called in private by "Mikaela!mkaysi@unaffiliated/mikaela".
INFO 2014-05-09T14:22:01 supybot user list called in private by "Mikaela!mkaysi@unaffiliated/mikaela".
INFO 2014-05-09T14:22:11 supybot user changename called in private by "Mikaela!mkaysi@unaffiliated/mikaela".
INFO 2014-05-09T14:22:19 supybot flush called in private by "Mikaela!mkaysi@unaffiliated/mikaela".
INFO 2014-05-09T14:22:21 supybot config reload called in private by "Mikaela!mkaysi@unaffiliated/mikaela".
INFO 2014-05-09T14:22:23 supybot user list called in private by "Mikaela!mkaysi@unaffiliated/mikaela".
INFO 2014-05-09T14:24:23 supybot config reload called in private by "Mikaela!mkaysi@unaffiliated/mikaela".
INFO 2014-05-09T14:24:25 supybot user list called in private by "Mikaela!mkaysi@unaffiliated/mikaela".

There are no errors, but the name didn't change before I modified conf/users.conf by myself. I even thought that it wants flush and config reload, but those didn't do anything either.