Duck Donuts has announced that it is celebrating National Donut Day with a free classic sweet treat. Guests are invited to visit any Duck Donuts location on Friday, June 6 for one free cinnamon sugar donut per guest, no purchase necessary, in-store only. 

In addition to the freebie, guests can also enjoy the one day only offer of a half dozen cinnamon sugar donuts for just $6, available in-store and online.

National Donut Day, which is traditionally celebrated on the first Friday of June, was established in 1938 by the Chicago Salvation Army to honor women who served donuts, known as “doughnut lassies,” to soldiers during World War I.