OPINION
David Terrell Johnson pled guilty to assault resulting in serious bodily injury, in violation of 18 U.S.C. § 113(a)(6) (1994), and was sentenced to a term of forty-six months imprisonment. He seeks to appeal, alleging that his sentence was disproportionately harsh. We find that Johnson waived his appeal rights and, therefore, dismiss the appeal.
In his plea agreement, Johnson waived the right to appeal a sentence within the statutory maximum. This provision of the agreement was brought to his attention by the district court during the plea colloquy, and Johnson stated that he understood the waiver and affirmed his intention to waive his appeal rights. A defendant may waive the right to appeal if the waiver is knowing and intelligent. United States v. Broughton-Jones, 71 F.3d 1143, 1146 (4th Cir. 1995). We find that Johnson’s waiver was knowing and voluntary and effectively bars review of his challenge to the district court’s imposition of sentence.
Accordingly, we dismiss the appeal. We dispense with oral argument, because the *237facts and legal contentions are adequately presented in the materials before the court and argument would not aid the decisional process.
DISMISSED.