OPINION

Kenneth Van Duncan pled guilty to conspiracy to possess with intent to distribute and to distribute cocaine and cocaine base, in violation of 21 U.S.C. § 846 (2000). Duncan now appeals contending that the district court erred in accepting his guilty plea and in refusing to grant a three-level reduction for acceptance of responsibility. For the foregoing reasons, we affirm.

We generally review the adequacy of a guilty plea de novo, but in the Rule 11 context, violations are evaluated for harmless error. United States v. Goins, 51 F.3d 400, 402 (4th Cir. 1995). Any variance from the Rule 11 requirements that does not affect the substantial rights of the defendant is disregarded. Fed.R.Crim.P. 11(h); United States v. DeFusco, 949 F.2d 114, 117 (4th Cir. 1991). The district court must ensure that the defendant is competent to enter the plea and that the plea is given knowingly and voluntarily. Godinez v. Moran, 509 U.S. 389, 400, 113 S.Ct. 2680, 125 L.Ed.2d 321 (1993). We have reviewed the record and conclude that the district court did not err in accepting Duncan’s guilty plea.

Because Duncan failed to object at the sentencing hearing to the district court’s decision to deny a reduction to the offense level for acceptance of responsibility, we review for plain error, see Fed.R.Crim.P. 52(b); United States v. Olano, 507 U.S. 725, 732, 113 S.Ct. 1770, 123 L.Ed.2d 508 (1993), and find none. *

Accordingly, we affirm Duncan’s conviction and 151-month sentence. We dispense with oral argument because the facts and legal contentions are adequately presented in the materials before the court and argument would not aid the decisional process.

AFFIRMED.