diff --git a/drivers/staging/iio/light/isl29018.c b/drivers/staging/iio/light/isl29018.c
index 351936c3efd698e8c5cbe76d7878eb8ad16c311f..e4998e4d4434b2af9365aacc1a8c4137a4c70544 100644
--- a/drivers/staging/iio/light/isl29018.c
+++ b/drivers/staging/iio/light/isl29018.c
@@ -563,6 +563,7 @@ static int isl29018_probe(struct i2c_client *client,
 	mutex_init(&chip->lock);
 
 	chip->lux_scale = 1;
+	chip->lux_uscale = 0;
 	chip->range = 1000;
 	chip->adc_bit = 16;
 	chip->suspended = false;