An ECU calculates a target phase angle of an intake valve, a target phase angle of an exhaust valve, and a target overlap period based on a rotational speed and a load factor of an engine. The ECU is configured to, in the case where valve timings of the intake valve and the exhaust valve are advanced, set the target phase angle of an intake valve and the target phase angle of the exhaust valve as the target phase angles of the exhaust valve and the intake valve when a minus overlap takes place.