Same thing happened to me last year and I had exactly the same reaction :) It’s just the default information the franchise tax board uses to estimate your taxes. When you file to pay your minimum $500 you can update the information to show $0 revenue, and 0 shares issued in the 12 month period which should bring the amount down to the minimum $500. If you have any problems you can call the Delaware tax board and they can walk you through it (that’s what I did).