Affirmed by unpublished PER CURIAM opinion.

Unpublished opinions are not binding precedent in this circuit.

Christopher Harris pleaded guilty to manufacturing and possession with intent to distribute marijuana plants pursuant to a plea agreement. The district court sentenced Harris to 240 months of imprisonment, a variance sentence below the Guidelines range, and he now appeals. Finding no error, we affirm.

Harris argues on appeal that his trial counsel was ineffective for failing to challenge his career offender status or investigate his predicate convictions. To prove a claim of ineffective assistance of counsel, a defendant must show (1) “that counsel’s performance was deficient,” and (2) “that the deficient performance prejudiced the defense.” Strickland v. Washington, 466 U.S. 668, 687, 104 S.Ct. 2052, 80 L.Ed.2d 674 (1984). Moreover, we may address a claim of ineffective assistance on direct appeal only if the lawyer’s ineffectiveness conclusively appears on the record. United States v. Baldovinos, 434 F.3d 233, 239 (4th Cir. 2006). We have thoroughly reviewed the record and conclude that Harris has failed to demonstrate that ineffective assistance of counsel conclusively appears on the record. We therefore decline to address this argument on direct appeal.

Accordingly, we affirm the judgment of the district court. We dispense with oral argument because the facts and legal contentions are adequately presented in the materials before this court and argument would not aid the decisional process.

AFFIRMED.