diff --git a/Documentation/ABI/testing/sysfs-bus-iio b/Documentation/ABI/testing/sysfs-bus-iio
index 99cc9466cb07..d97c35057a03 100644
--- a/Documentation/ABI/testing/sysfs-bus-iio
+++ b/Documentation/ABI/testing/sysfs-bus-iio
@@ -684,6 +684,7 @@ What:		/sys/bus/iio/devices/iio:deviceX/in_intensity_red_hardwaregain
 What:		/sys/bus/iio/devices/iio:deviceX/in_intensity_green_hardwaregain
 What:		/sys/bus/iio/devices/iio:deviceX/in_intensity_blue_hardwaregain
 What:		/sys/bus/iio/devices/iio:deviceX/in_intensity_clear_hardwaregain
+What:		/sys/bus/iio/devices/iio:deviceX/in_illuminance_hardwaregain
 KernelVersion:	2.6.35
 Contact:	linux-iio@vger.kernel.org
 Description: