diff --git a/drivers/regulator/fixed.c b/drivers/regulator/fixed.c
index 21ecf21..ccbead0 100644
--- a/drivers/regulator/fixed.c
+++ b/drivers/regulator/fixed.c
@@ -80,7 +80,10 @@
 {
 	struct fixed_voltage_data *data = rdev_get_drvdata(dev);
 
-	return data->microvolts;
+	if (data->microvolts)
+		return data->microvolts;
+	else
+		return -EINVAL;
 }
 
 static int fixed_voltage_list_voltage(struct regulator_dev *dev,