The restaurant chain, which serves breakfast all day, said it was adding the temporary 50-cent surcharge because the bird flu has caused a shortage in the egg supply.

Waffle House’s announcement was attributed to soaring egg prices due to shortages caused by an aggressive strain of the avian flu.

“While we hope these price fluctuations will be short-lived we cannot predict how long this shortage will last,” Waffle House said in a statement. “We are continuously monitoring egg prices and will adjust or remove the surcharge as market conditions allow.”