Raymond Bentley appeals the 135-month guidelines sentence that he received after he pleaded guilty to conspiracy to distribute crack cocaine. Bentley asserts that he did not validly waive his right to appeal. Although the Government initially indicated its intent to enforce the appeal waiver, it now acknowledges that it agreed to strike the waiver provision in the district court. Consequently, there is no appeal waiver to enforce. Bentley, however, has failed to brief adequately any challenge to the validity of the sentence. 1 See *625 Fed. R.App. P. 28(a)(9)(A); Edmond v. Collins, 8 F.3d 290, 292 n. 5 (5th Cir. 1993). Accordingly, we AFFIRM the judgment of the district court.