In what looks to be a brilliant marketing move for both companies, UberEATS will deliver free boxes of Voodoo Doughnuts from 9 a.m. to 11 a.m. Friday. Once that two-hour window closes, UberEATS will deliver lunch requests, per usual business operations, from 11 a.m. to 2 p.m.

The wildly popular Portland-based doughnut shop officially opens at 211 E. Sixth St. on Halloween, so this promotion from the food-delivery app will give people a sneak peek. The promotion is set for 9 a.m. to 11 a.m. but will only last as long as supplies last (limit one box per customer).

Wondering how UberEATS works? Uber users open the Uber app, select EATS, set delivery location, and place their order. Food shows up within minutes. Majorly important note: The UberEATS delivery area is extremely limited in Austin (Lady Bird Lake to 38th Street and Lamar Avenue to I-35). Check the map here.

The app has already expanded its offerings since first launching. As a sample taste, today it is delivering food from Noble Sandwich Co., Sagra, Manuel’s, and Gus’s Fried Chicken.