Defendant-Appellant Emmanuel Karriem Shabazz pleaded guilty to possession with intent to distribute methamphetamine, a violation of 21 U.S.C. § 841(a)(1). He was sentenced to 135 months of imprisonment and five years of supervised release. Shabazz now appeals, challenging only his sentence.

Citing Blakely v. Washington, 542 U.S. 296, 124 S.Ct. 2531, 159 L.Ed.2d 403 (2004), Shabazz argues that the district court erred when it enhanced his offense level by two pursuant to U.S.S.G. § 2Dl.l(b)(l) based on a preponderance finding that Shabazz possessed a weapon in connection with the offense. In light of the Supreme Court’s recent decision in United States v. Booker, — U.S. --, 125 S.Ct. 738, 756, 160 L.Ed.2d 621 (2005), the judicially determined enhancement, made under a mandatory guideline regime, violated Shabazz’s Sixth Amendment right to a trial by jury.

When, as here, a defendant has preserved a Booker issue in the district court, “we will ordinarily vacate the sentence and remand, unless we can say the error is harmless under Rule 52(a) of the Federal Rules of Criminal Procedure.” United States v. Mares, 402 F.3d 511, 520 n. 9 (5th Cir. 2005). We conclude that, were we to review Shabazz’s sentence for harmless error, we would hold that the government has not met its burden of demonstrating beyond a reasonable doubt that the mandatory nature of the guidelines did not contribute to the sentence imposed. See United States v. Akpan, 407 F.3d 360, 376-77 (5th Cir. 2005). Accordingly, we vacate Shabazz’s sentence and remand for resentencing. See id.

SENTENCE VACATED; REMANDED FOR RESENTENCING.