diff --git a/drivers/iio/adc/cc10001_adc.c b/drivers/iio/adc/cc10001_adc.c
index e7810ac8e2951f754b606f344e2dbfe85b01967f..fb7c5d2cc61a7a8067de2714cd2c3ac625cdcf5d 100644
--- a/drivers/iio/adc/cc10001_adc.c
+++ b/drivers/iio/adc/cc10001_adc.c
@@ -230,7 +230,7 @@ static int cc10001_adc_read_raw(struct iio_dev *indio_dev,
 
 	case IIO_CHAN_INFO_SCALE:
 		ret = regulator_get_voltage(adc_dev->reg);
-		if (ret)
+		if (ret < 0)
 			return ret;
 
 		*val = ret / 1000;