Pringles says it erroneously overpaid its Tennessee taxes by $2.1 million and the company known for its potato chips is suing the state to recoup the money.

Pringles Manufacturing Company sued state Revenue Commissioner David Gerregano late last month in Davidson County Chancery Court. The Michigan-based company has a Jackson, Tennessee manufacturing facility.

Court filings say Pringles erroneously overpaid sales and use taxes from 2012 through 2015 on purchases that were actually tax exempt.

The lawsuit says Pringles filed a refund claim in December 2016, but Tennessee’s Department of Revenue didn’t determine the claim during the required six-month window, so it was deemed denied.

The lawsuit calls the decision unjust, illegal and incorrect.