diff --git a/drivers/iio/light/opt4060.c b/drivers/iio/light/opt4060.c
index c391ad3271c6..cf6f69e5be35 100644
--- a/drivers/iio/light/opt4060.c
+++ b/drivers/iio/light/opt4060.c
@@ -632,6 +632,9 @@ static int opt4060_write_raw(struct iio_dev *indio_dev,
 
 	switch (mask) {
 	case IIO_CHAN_INFO_INT_TIME:
+		if (val)
+			return -EINVAL;
+
 		int_time = opt4060_als_time_to_index(val2);
 		if (int_time < 0)
 			return int_time;