diff --git a/drivers/regulator/max8998.c b/drivers/regulator/max8998.c
index 06be8cc7aadf8f572b0b447de65f24b9bfc470d7..1f0df4046b86d0a303c229379091d76407f61129 100644
--- a/drivers/regulator/max8998.c
+++ b/drivers/regulator/max8998.c
@@ -447,7 +447,7 @@ static int max8998_set_voltage_buck_time_sel(struct regulator_dev *rdev,
 
 	difference = (new_selector - old_selector) * desc->step / 1000;
 	if (difference > 0)
-		return difference / ((val & 0x0f) + 1);
+		return DIV_ROUND_UP(difference, (val & 0x0f) + 1);
 
 	return 0;
 }