Gary Andre Watson seeks to appeal his conviction, pursuant to a written plea agreement, and 121-month sentence for distributing less than five grams of cocaine base. The Government has moved to dismiss the appeal as waived. * The plea agreement specifically included a waiver of Watson’s right to appeal his sentence. A waiver of appeal provision in a valid plea agreement is enforceable if it resulted from a knowing and intelligent decision to forgo an appeal. United States v. Attar, 38 F.3d 727, 731 (4th Cir. 1994); United States v. Wiggins, 905 F.2d 51, 53 (4th Cir. 1990). This court reviews de novo the validity of a waiver. United States v. Brown, 232 F.3d 399, 402-03 (4th Cir. 2000). We conclude that Watson knowingly agreed to the waiver. Therefore, we *336 grant the Government’s motion to dismiss the appeal. 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.

DISMISSED