Rename case

I am trying to rename a folder with the same name but in a different case. Consider this simple code:

Rename-Item -Path C:\files -NewName C:\Files

      

        
        
        
      

    

Returns the error "The source and destination path must be different."

Also I tried this:

$item = 'C:\files'
Rename-Item -Path $item -NewName ($item.Name -replace 'files', 'Files')

      

        
        
        
      

    

What does not work. Also the parameter -force

doesn't help.

What am I missing? Thank.