Renaming home folder

[inkslinger]

After renaming the default user rock, I followed the instructions on the wiki to rename the home folder, using the following command in root terminal:

Code:

usermod -d /home/rock -m NewUser

I get the message returned:

Code:

usermod: no changes

How do I rename the default rock folder, so that my home folder name and user name match? I'm running the default Debian MATE OS.