Earlier this week, we reported that McDonald’s Japan is in the middle of a potato shortage, causing them to halt sales of medium and large-size fries. Even the meal sets will come with a measly small fries, though thankfully at a discounted price.

Rival chain Lotteria is happily pouring salt in the wound by using McDonald’s hardships to market their own fried spuds. See if you can spot the recent addition to their menu after the jump.

Twitter user @Simon_Sin spotted this at a Tokyo Lotteria:

It reads, “We’ll serve you any size of fries you want!”

Aww, snap. Your move, McDonalds.

Source: Twitter via Hamusoku