Oops.

Republican U.S. Senate candidate for New Hampshire Scott Brown fell into a trap he has been working hard to avoid when he listed himself as a Massachusetts state senator in a recent campaign finance filing.

The Federal Election Commission document, obtained by WMUR, features a receipt dated September 9, 2014, in which Brown lists “Commonwealth of MA” as the name of his employer and “state senator” under occupation.

(Image courtesy of James Pindell, via WMUR)

Brown served Massachusetts in the state house from 1998-2004, the state senate from 2004-2010 and in the U.S. Senate from 2010 until he lost to Elizabeth Warren in 2012. He moved to New Hampshire ahead of the 2014 election to run for Senate, anticipating a better chance of victory in the purple state. He’s currently in a dead heat with his opponent, Sen. Jeanne Shaheen (D).

Brown’s campaign aides didn’t respond to WMUR or TPM’s queries for comment. An anonymous spokesperson told reporter Alexandra Jaffe of The Hill that the listing of Massachusetts was “a clerical error and the report is being amended and refiled accordingly.”