[GAMEPLAY] Incorrect damage on Xerath's Eye of Destruction tooltip

When hovering over Xerath's Eye of Destruction at the beginning of the game, it says that if you hit enemies in the center, it will deal 0 damage, this changes to 45 (+the ap modifier) after your first move. However, 45 base damage is half of its actual base damage. After your first use of it, the tooltip will correctly say that it has a base damage of 90. Using it for the first time will result in the correct damage being dealt. https://drive.google.com/file/d/0B2btCm9OpD59OGxnWmRTb3BJNHc/view?usp=sharing