MEMORANDUM **

Herman William Rael appeals pro se from the district court’s order denying his motion for a sentence reduction under 18 U.S.C. § 3582(c)(2). We have jurisdiction under 28 U.S.C. § 1291, and we affirm.

Rael contends that he is entitled to a sentence reduction under Amendment 782 to the Sentencing Guidelines. We review de novo whether a district court has authority to modify a sentence under section 3582(c)(2). See United States v. Wesson, 583 F.3d 728, 730 (9th Cir. 2009). Rael was sentenced as a career offender under U.S.S.G. § 4B1.1. Thus, his sentence was not “based on” a Guideline that was lowered by Amendment 782. See 18 U.S.C. § 3582(c)(2); Wesson, 583 F.3d at 731. Further, insofar as Rael contends that the district court erred when it determined that he was a career offender, this claim is not cognizable in a section 3582(c)(2) proceeding. See Dillon v. United States, 560 U.S. 817, 831, 130 S.Ct. 2683, 177 L.Ed.2d 271 (2010) (alleged sentencing errors are “outside the scope of the proceeding authorized by § 3582(c)(2)”).

AFFIRMED.