Ryan Ferro, a federal prisoner convicted of a crack cocaine offense, appeals the district court’s ruling on his pro se motion for a reduced sentence under 18 U.S.C. § 3582(c)(2). After review, we affirm.

Ferro filed his § 3582(c)(2) motion based on Amendment 706 to the Sentencing Guidelines, which lowered the base offense levels applicable to crack cocaine offenses. See U.S.S.G.App. C,' amends. 706, 713. The district court granted Ferro’s motion in part and reduced Ferro’s 151-month sentence 1 to 121 months’ imprisonment, the low end of Ferro’s new guidelines range of 121 to 151 months.

The district court denied Ferro’s request to impose a sentence below the new guidelines range, concluding that, pursuant to U.S.S.G. § lB1.10(b)(2)(A), district courts are not authorized under § 3582(c)(2) to reduce a defendant’s sentence below the low end of the amended guidelines range. 2 Citing United States v. Booker, 543 U.S. 220, 125 S.Ct. 738, 160 L.Ed.2d 621 (2005), Ferro argues that the district court erred when it concluded that it lacked authority to reduce Ferro’s sentence below the low end of his amended guidelines range. 3

We need not resolve whether Booker applies to § 3582(c)(2) resentencings, however, because any alleged error was harmless. The district court expressly found that “even if Booker were applied, the Court would in all likelihood impose the same sentence” and that Ferro’s 121-month sentence was “sufficient but not greater than necessary to comply with all of the factors considered under 18 U.S.C. § 3553(a).” (Quotation marks omitted). In light of these findings, we fairly can conclude that the district court would have imposed the same 121-month sentence even if it had believed it had the authority to impose a sentence below the amended guidelines range. As a result, any error *823 the district court may have made had only a very slight, if any, effect on Ferro’s sentence and was harmless. See United States v. Mathenia, 409 F.3d 1289, 1292 (11th Cir. 2005) (explaining that a statutory Booker error is harmless when it did not affect, or had only a very slight effect on, the sentence when viewing the proceedings as a whole).

AFFIRMED.