Martin Lee Barron and Chrystal Michelle Kevil appeal the sentences imposed pursuant to their conviction on drug possession charges. Specifically, they argue that the district court violated their Sixth Amendment rights as outlined in United States v. Booker, — U.S.-, 125 S.Ct. 738, 160 L.Ed.2d 621 (2005), by enhancing their sentences based on a drug quantity related to a conspiracy charge on which the jury acquitted them.
Ultimately, this case turns on whether Barron and Kevil preserved their Booker argument in the district court. If the error was not preserved, we will review the appellants’ sentences for plain error. See United States v. Mares, 402 F.3d 511, 520 (5th Cir.2005). If the error was preserved, we will review the sentences for harmless error. See United States v. Pineiro, 410 F.3d 282, 286 (5th Cir.2005).
We determine that an error is preserved if “the objection was specific enough to allow the trial court to take testimony, receive argument, or otherwise explore the issue raised.” United States v. Burton, 126 F.3d 666, 673 (5th Cir.1997). The responses of both the Government and the district court persuade us that the appellants’ objections apprised the district court of their Booker argument. We therefore hold that the error was preserved, and we review the sentences for harmless error. The Government conceded at oral argument that it could not meet its burden to *829show “beyond a reasonable doubt that the error did not affect the outcome of the district court proceedings, i.e., that the district court would have imposed the same sentence absent the error.” Pineiro, 410 F.3d at 286. There is nothing in this record that persuades us to the contrary. Accordingly, we hold that the error was not harmless. Therefore, the appellants’ sentences are VACATED and the case is REMANDED to the district court for re-sentencing.
VACATED and REMANDED.