Will Gasaway pleaded guilty to conspiracy to distribute 50 grams or more of a mixture or substance containing a detectable amount of methamphetamine. Gasa-way appeals his within-guidelines sentence of 135 months of imprisonment, arguing that the sentence is proeedurally unreasonable because the district court failed to provide adequate reasons for his sentence.

Because Gasaway did not object at sentencing to the adequacy of the court’s reasons for the sentence, this issue is reviewed for plain error. See United States v. Mondragon-Santiago, 564 F.3d 357, 361 (5th Cir. 2009), petition for cert. filed (June 24, 2009) (No. 08-11099). Even if the district court failed to adequately explain its reasons for rejecting Gasaway's request for a downward departure, Gasaway has not demonstrated how any error affected his substantial rights; that is, he has not shown that the purported error affected or “undermine[d] confidence in the outcome.” Id. at 364. Thus, Gasaway has not met the plain error standard. Accordingly, we AFFIRM the district court’s judgment.