OPINION

Rafael Ramirez-Majarro appeals his conviction on a guilty plea on a charge of conspiracy to possess with the intent to distribute a quantity of marijuana, in violation of 21 U.S.C.A. §§ 841(a)(1), 846 (West *302 1999). The district court accepted Ramirez-Majarro’s plea following an extensive plea colloquy pursuant to Fed. R.Crim.P. 11, and ultimately sentenced Ramirez-Majarro to eighty-seven months’ imprisonment, five years of supervised release, and a $100 special assessment. Ramirez-Majarro now seeks to withdraw his guilty plea, claiming ineffective assistance of counsel based on his attorney’s alleged failure to accurately determine his sentence before he entered into the plea agreement. * For the reasons stated below, we affirm Ramirez-Majarro’s conviction and sentence.

As part of his written plea agreement, Ramirez-Majarro expressly waived his right to appeal his sentence. While the waiver did not apply to claims of ineffective assistance of counsel, such claims should be raised by motion under 28 U.S.C. § 2255 (2000), in the district court, and not on direct appeal, unless it “conclusively appears” from the record that the defense counsel did not provide effective representation. United States v. DeFusco, 949 F.2d 114, 120-21 (4th Cir. 1991). We find that it does not conclusively appear from the face of the record that Ramirez-Majarro’s defense counsel failed to provide effective representation sufficient for this claim to be cognizable on direct appeal, given the terms of the plea agreement, as well as Ramirez-Majarro’s responses to the district court during his Fed.R.Crim.P. 11 plea colloquy.

Accordingly, we affirm Ramirez-Majar-ro’s conviction and 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.