TEXAS -- Responding to customers on Twitter Wednesday, Whataburger confirmed that it was pulling white buns and Texas Toast from some of its restaurants citing a "quality issue" with one of its suppliers.

"We voluntarily removed white buns and Texas Toast from some of our restaurants because of a quality issue with one of our suppliers. We’re working to get new buns to impacted restaurants in DFW, East & West Texas, OK and NW Arksanas today," the tweet said.

The confirmation comes after In-N-Out Burger closed its restaurants Monday evening over an issue with its hamburger buns. According to In-N-Out, the closures were due to a quality control issue with a recent shipment.

In-N-Out opened its restaurants again on Wednesday.