Defendant-Appellant Gabriel Benjamin Ulescas-Diaz (Illescas) appeals the sentence imposed following his guilty plea to possession with intent to distribute cocaine. He argues that the district court clearly erred in denying him a role adjustment pursuant to U.S.S.G. § 3B1.2 (2004).

We hold that the record does not establish that Illescas, whose role was, at a minimum, to transport 18.41 kilograms of cocaine from Mexico to Dallas, Texas, was “plainly among the least culpable of those involved in the conduct of a group.” See § 3B1.2, comment, (n.4). He has therefore not shown that the district court clearly erred in denying him a minimal-role adjustment. See United States v. Villanueva, 408 F.3d 193, 203 n. 9 (5th Cir.), cert. denied, — U.S. -, 126 S.Ct. 268, 163 L.Ed.2d 241 (2005).

Similarly, Illeseas’s self-proclaimed role as courier was not peripheral to the advancement of the offense. The district *354 court therefore did not clearly err in denying him an adjustment for a minor role in the offense. See United States v. Miranda, 248 F.3d 434, 446-47 (5th Cir. 2001).

AFFIRMED.