Federal prisoner Rudy Williams appeals from the district court’s denial of his second motion seeking a reduction in sentence pursuant to 18 U.S.C. § 3582 and the crack cocaine amendments to the Sentencing Guidelines. Section 3582(c)(2) permits the discretionary modification of a defendant’s sentence only where the defendant’s sentencing range is actually lowered by the Sentencing Commission. 1 The crack cocaine amendments at issue here are inapplicable to an offender like Williams whose offense level was based on 4.5 kilograms or more of crack cocaine, and thus the crack cocaine amendments did not change Williams’s guidelines sentencing range. 2 Because he was ineligible for re *421 lief, the district court did not abuse its discretion in denying Williams’s section 3582(c)(2) motion. 3

AFFIRMED.