Michael Sean Green appeals the sentence imposed following his guilty plea *912 conviction for conspiracy to possess with intent to distribute marijuana. The district court sentenced Green to a within-guidelines sentence of 90 months in prison and four years of supervised release. He argues that his sentence was substantively unreasonable because: (1) the drug-trafficking guideline, U.S.S.G. § 2D1.1, tends to overstate the sentence necessary in a mine-run case because it is not based upon empirical data; (2) his risk of recidivism is low because he is a first-time offender; and (3) his devotion to his young son warranted a lower sentence.

As Green did not challenge the drug-trafficking guideline as flawed in district court, that challenge is reviewed only for plain error. See United States v. Campos-Maldonado, 531 F.3d 337, 339 (5th Cir. 2008). His challenge to the drug-trafficking guideline based upon its alleged lack of supporting empirical data is unpersuasive. See United States v. Mondragon-Santia-go, 564 F.3d 357, 366-67 (5th Cir.), cert. denied, —- U.S.-, 130 S.Ct. 192, 175 L.Ed.2d 120 (2009); Campos-Maldonado, 531 F.3d at 338-39. His within-guideline sentence is afforded a presumption of reasonableness. See Mondragon-Santiago, 564 F.3d at 367. Green has not shown sufficient reason for this court to disturb the sentence imposed by the district court.

The district court’s judgment is AFFIRMED.