diff --git a/drivers/iio/light/ltr390.c b/drivers/iio/light/ltr390.c
index 1d9f2149a627..a92034cdd67a 100644
--- a/drivers/iio/light/ltr390.c
+++ b/drivers/iio/light/ltr390.c
@@ -46,9 +46,9 @@
 #define LTR390_THRESH_LOW		0x24
 
 #define LTR390_PART_NUMBER_ID		0xb
-#define LTR390_ALS_UVS_GAIN_MASK	0x07
+#define LTR390_ALS_UVS_GAIN_MASK	GENMASK(2, 0)
 #define LTR390_ALS_UVS_MEAS_RATE_MASK	GENMASK(2, 0)
-#define LTR390_ALS_UVS_INT_TIME_MASK	0x70
+#define LTR390_ALS_UVS_INT_TIME_MASK	GENMASK(6, 4)
 #define LTR390_ALS_UVS_INT_TIME(x)	FIELD_PREP(LTR390_ALS_UVS_INT_TIME_MASK, (x))
 #define LTR390_INT_PST_MASK		GENMASK(7, 4)
 #define LTR390_INT_PST_VAL(x)		FIELD_PREP(LTR390_INT_PST_MASK, (x))