Deryck Whibley revealed that he took his ex-wife Avril Lavigne's last name when they wed in 2006, and had kept it until this year, despite their 2009 divorce.
The Sum 41 singer filed a petition to legally drop his ex-wife's last name, which he had adopted as one of his own after the pair tied the knot in 2006.
He wants to be Deryck Jason Whibley again. Not Deryck Jason Lavigne Whibley.
Lavigne, as you know, swapped vows with Nickelback frontman Chad Kroeger in July, the bride wearing black in a Monique Lhuillier gown for the occasion.
It's hard to tell if it was a dark day as well for Whibley, who dressed as his ex-wife for Halloween last year while girlfriend Ari Cooper went as Kroeger.