Proceeding pro se and in forma pauper-is, Pathom Madane Daniels, federal prisoner # 36920-177, appeals the district court’s grant of his 18 U.S.C. § 3582(c)(2) motion for a sentence reduction. He contends that the district court should have reduced his sentence even more than it did because, he argues, his original sentence was based on relevant conduct that he did not admit and that was not proven beyond a reasonable doubt in violation of Apprendi v. New Jersey, 530 U.S. 466, 120 S.Ct. 2348, 147 L.Ed.2d 435 (2000), Blakely v. Washington, 542 U.S. 296, 124 S.Ct. 2531, 159 L.Ed.2d 403 (2004), and United States v. Booker, 543 U.S. 220, 125 S.Ct. 738, 160 L.Ed.2d 621 (2005).

Daniels did not raise this issue in his motion in the district court; thus, our review is for plain error. See United States v. Jones, 596 F.3d 273, 276 (5th Cir. 2010). Section 3582(c)(2) gives a district court the discretion to modify a defendant’s sentence in certain cases where the Sentencing Commission lowers the applicable guidelines range after the defendant has been sentenced. United States v. Doublin, 572 F.3d 235, 236-37 (5th Cir. 2009); see § 3582(c)(2). However, motions under § 3582(c)(2) may not be used to challenge the correctness of the defendant’s original sentence, as Daniels attempts to do here. See United States v. Whitebird, 55 F.3d 1007, 1011 (5th Cir. 1995).

Accordingly, the judgment of the district court is AFFIRMED.