Anez S. Robinson, federal prisoner # 19981-077, appeals the district court’s denial of his 18 U.S.C. § 3582(c)(2) motion for reduction of sentence based upon Amendment 706 to the United States Sentencing Guidelines. Robinson implicitly concedes that Amendment 706 did not reduce his Guidelines sentence range, thereby making him ineligible for a sentence reduction pursuant to U.S.S.G. § lB1.10(a)(2)(B). Nevertheless, Robinson asserts that United States v. Booker, 543 U.S. 220, 125 S.Ct. 738, 160 L.Ed.2d 621 (2005), applies to Section 3582(c)(2) proceedings, making his Guidelines sentence range and Section lB1.10(a)(2)(B) advisory only. He contends that the district court had authority to reduce his sentence under Section 3582(c)(2) because the guideline provision upon which his sentence was based was modified by Amendment 706. He maintains that the district court’s denial of his Section 3582(c)(2) motion must be vacated because it was based upon a mandatory application of the Guidelines.

Because Robinson was held responsible for more than 15 kilograms of cocaine base, Amendment 706 did not lower his Guidelines sentence range. See U.S.S.G. app. C, amend. 706 (2007). Thus, Robinson was not eligible for a sentence reduction pursuant to Section 1B1.10(a)(2)(B). Following the briefing in this case, this court held that “Booker does not alter the mandatory character of [Section] lBl.lO’s limitations on sentence reductions.” United States v. Doublin, 572 F.3d 235, 238 (5th Cir. 2009) (per curiam). Accordingly, the district court did not have authority to reduce Robinson’s sentence. See id.

AFFIRMED.