COLUMBUS, Ohio AP – Wendy’s International Inc.’s largest franchisee is suing the hamburger chain for $2 million, claiming it improperly inflated the cost of soda syrup and diverted the extra money to national advertising.

The lawsuit, filed Tuesday in U.S. District Court by Maryland-based DavCo Restaurants Inc., says Wendy’s violated its contract with DavCo by diverting the extra money and not crediting it back to DavCo.