diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c
index c2ce0ad21693c0279adcc2b9529c00b77c4fc0ff..cbb27b4ddea4d48372e735f140c1c8906fc0bfe8 100644
--- a/drivers/acpi/battery.c
+++ b/drivers/acpi/battery.c
@@ -152,6 +152,8 @@ static int acpi_battery_get_property(struct power_supply *psy,
 			val->intval = POWER_SUPPLY_STATUS_CHARGING;
 		else if (battery->state == 0)
 			val->intval = POWER_SUPPLY_STATUS_FULL;
+		else
+			val->intval = POWER_SUPPLY_STATUS_UNKNOWN;
 		break;
 	case POWER_SUPPLY_PROP_PRESENT:
 		val->intval = acpi_battery_present(battery);