After a special, short-time promotion offering pork ribs, Burger King says it doesn't have enough ribs to last to the end of the promotion.

The company says demand for the ribs has been so great that it expects to use up its whole order in the next week or so. The promotion was slated to end June 20.

From the Wall Street Journal:

The results suggest fast-food customers are willing to splurge for higher-priced items, a promising sign after chains used low prices to lure traffic. It also helps ease Burger King's strained relations with its franchisees, who want to sell more profitable products.

The chain had scheduled national ads featuring a pig with wings convincing a skeptic that a fast-food chain can cook up a mean rib, which were to run from May 24 through June 20. Burger King now plans to shuffle its advertisements over the next week to feature a different product so it's not broadcasting an out-of-stock product.

The company recently sold its 10 millionth rib. Have you tried them?

Follow Daryl Paranada at @darylparanada