Cannot SCP your file to another server

Usually.. I have no problem to scp my file to another server.. But today it giving me below error :

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@ WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! @
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IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY!
Someone could be eavesdropping on you right now (man-in-the-middle attack)!
It is also possible that the RSA host key has just been changed.
The fingerprint for the RSA key sent by the remote host is
XX:XX:XX:XX:XX:XX:XX:XX:XX:XX:XX:XX:XX:XX:XX:XX.
Please contact your system administrator.
Add correct host key in /root/.ssh/known_hosts to get rid of this message.
Offending key in /root/.ssh/known_hosts:11
RSA host key for 1XX.1X.XX0.xX0 (ip) has changed and you have requested strict checking.
Host key verification failed.

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So, here is the step to resolved this problem
#cd /root/
#ee .ssh/known_hosts
pastu ctrl-k semua line dalam tuh..
save..

Actually this .ssh/known_hosts file keep cache of previous access ssh command.

Then ok.. :) paham2..