diff --git a/drivers/regulator/wm831x-dcdc.c b/drivers/regulator/wm831x-dcdc.c
index 782c228a19bd503ccda868ac67f46cce7fbba2e7..411cb12385aa3a5e159df2b0379a2e5685d3d1bf 100644
--- a/drivers/regulator/wm831x-dcdc.c
+++ b/drivers/regulator/wm831x-dcdc.c
@@ -223,7 +223,7 @@ static int wm831x_buckv_map_voltage(struct regulator_dev *rdev,
 	if (min_uV < 600000)
 		vsel = 0;
 	else if (min_uV <= 1800000)
-		vsel = ((min_uV - 600000) / 12500) + 8;
+		vsel = DIV_ROUND_UP(min_uV - 600000, 12500) + 8;
 	else
 		return -EINVAL;