--- acpilight-1.0/90-backlight.rules	2017-02-23 21:03:30.000000000 +0000
+++ acpilight-1.0/90-backlight.rules	2018-01-13 09:14:11.290000000 +0000
@@ -1,4 +1,5 @@
 # Allow video group to control backlight and leds
+# do not edit this file, it will be overwritten on update
 SUBSYSTEM=="backlight", ACTION=="add", \
   RUN+="/bin/chgrp video %S%p/brightness", \
   RUN+="/bin/chmod g+w %S%p/brightness"