Del. Code tit. 29, § 2713

In the event any agency of this State having the power to collect fees or other receipts that become revenue to the General Fund of the State shall improperly collect and deposit such fees or other receipts with the State Treasurer, the State Treasurer shall have the authority, except as otherwise provided specifically by law, upon certification by the collecting agency that a fee or other receipt was improperly collected and deposited, to make a refund from the General Fund of the State in the amount improperly collected and deposited to the person from whom the fee or receipt was improperly collected.