AFI have apologised to fans, after a mix-up in the pressing plant led to a two part CD single having the same tracks on both CDs.
Released on Monday, 'Girl's Not Grey', the have band said that the faulty disc can be exchanged for the proper discs.
The band said: "As some of you may already have discovered, there has been a manufacturing error with one of the formats of our new single, whereby CD1 was pressed with the tracks intended for CD2. CD2 is unaffected by this, and contains the correct tracks."
"We love coming to the UK and want all our British fans to know how much we appreciate your support."