All Recipes is reporting that the Tostitos brand — which falls under the Frito Lay umbrella — has issued a massive recall on Tostitos Cantina Traditional Yellow Corn Tortilla Chips because the product may contain nacho cheese tortilla chips.

Frito-Lay has recalled less than 1,300 bags of Tostitos Cantina Traditional Yellow Corn Tortilla Chips due to an undeclared milk allergen. The recall impacts 13-ounce bags that feature specific code dates and manufacturer codes. The list of codes can be found here.

Frito-Lay is recalling a specific brand of its tortilla chips in 13 states. Here's what you need to know if you think you might have bought recalled chips.