General :: HTC One - Permanently Rename System Files

I'm basically trying to rename an audio file to kill the camera click, but found an issue that might give me problems later with other things I might want to do.

Each time I try renaming the file, the file renames itself back to its original name after I reboot the phone. For example, if I add .bak or an extra space in the file name, it disappears once I reboot.

I'm using ES File Explorer on my stock, rooted Sprint HTC One. I mounted the /system path as R/W, and the file is /system/media/audio/ui/camera_click.ogg.