OPINION

Chester Fletcher Wallace was convicted after he pled guilty to interference with commerce by threats or violence, in violation of 18 U.S.C. § 1951 (1994), carry and use of a firearm during a crime of violence, in violation of 18 U.S.C.A. § 924(e) (West 2000), and two counts of possession of a firearm by a convicted felon, in violation of 18 U.S.C.A. § 922(g)(1) & 924(e) (West 2000). On appeal, Wallace contends that he was deprived of his Sixth Amendment right to counsel because the district court failed to obtain a valid waiver of counsel when it granted his counsel’s motion to withdraw and allowed Wallace to represent himself. Finding no error, we affirm.

The Sixth Amendment guarantees not only the right to be represented by counsel, but the right to self-representation. Faretta v. California, 422 U.S. 806, 819, 95 S.Ct. 2525, 45 L.Ed.2d 562 (1975). The decision to represent oneself must be knowing and intelligent. Id. at 835, 95 S.Ct. 2525. An individual’s right to self-representation can be waived by a failure of timely assertion of the right or by subsequent conduct giving the appearance of uncertainty. United States v. Weisz, 718 F.2d 413, 425 (D.C.Cir. 1983). Courts must entertain every reasonable presumption against waiver of counsel. Brewer v. Williams, 430 U.S. 387, 404, 97 S.Ct. 1232, 51 L.Ed.2d 424 (1977). The record must show voluntary, knowing, and intelligent waiver. United States v. Gallop, 838 F.2d 105, 110 (4th Cir. 1988). Determination of a waiver of the right to counsel is a question of law, and thus to be reviewed de novo. United States v. Singleton, 107 F.3d 1091, 1097 n. 3 (4th Cir. 1997).

An assertion of the right to self-representation must be: (1) clear and unequivocal; (2) knowing, intelligent and voluntary; and (3) timely. United States v. Frazier-El, 204 F.3d 553, 558 (4th Cir.), cert. denied, 531 U.S. 994, 121 S.Ct. 487, 148 L.Ed.2d 459 (2000). While a trial court must determine if a waiver of counsel is knowing and intelligent, no particular interrogation of defendant is required, so long as the court warns the defendant of the dangers of self representation so that he makes his choice with his eyes open. United States v. King, 582 F.2d 888, 890 (4th Cir. 1978) (citing cases). We have reviewed the proceedings and find that Wallace was adequately warned of the dangers of self representation and voluntarily waived his right to counsel. See id. at 890.

We therefore affirm the judgment. We dispense with oral argument because the facts and legal contentions are adequately *206 presented in the materials before the court and argument would not aid the decisional process.

AFFIRMED.