Alfredo Quezada appeals his 212-month sentence for possession with intent to distribute heroin pursuant to 21 U.S.C. § 841(b)(1)(C). The Government does not seek enforcement of the sentence appeal waiver provision of the written plea agreement.

Quezada contends that his trial counsel was ineffective for failing to seek a downward departure or an offense level reduction pursuant to U.S.S.G. § 3B1.2 and for failing to object to the calculation of Quezada’s criminal history points. However, Quezada does not challenge the application of the career offender guideline, U.S.S.G. § 4B1.1, nor does he argue that counsel was ineffective for failing to object to the application of this guideline. Quezada’s offense level and criminal history category were dictated by § 4B1.1. Accordingly, Quezada was not prejudiced by any allegedly deficient performance by counsel regarding the calculation of a guideline *422 range that would have been applicable otherwise, but was not. Quezada has failed to show that counsel was ineffective. See Strickland v. Washington, 466 U.S. 668, 694, 104 S.Ct. 2052, 80 L.Ed.2d 674 (1984).

Quezada makes no argument showing that a limited role in an offense, which is provided for in § 3B1.2, is not adequately-taken into consideration under the Sentencing Guidelines. He has not adequately briefed any argument that counsel was ineffective for failing to move for a downward departure based on Quezada’s limited role in the offense, and we will not address the issue. See United States v. Brace, 145 F.3d 247, 255-56 (5th Cir. 1998) (en banc); Fed. R.App. P. 28(a)(9).

The judgment of the district court is AFFIRMED.