diff --git a/90-backlight.rules b/90-backlight.rules
new file mode 100644
index 0000000..d95fb2e
--- /dev/null
+++ b/90-backlight.rules
@@ -0,0 +1,3 @@
+SUBSYSTEM=="backlight", ACTION=="add", \
+  RUN+="/bin/chgrp video /sys/class/backlight/%k/brightness", \
+  RUN+="/bin/chmod g+w /sys/class/backlight/%k/brightness"