PER CURIAM: Spencer Lamont Stacey seeks to appeal the district court’s order dismissing his 28 U.S.C. § 2254 (2000) petition. The district court referred this case to a magistrate judge pursuant to 28 U.S.C. § 636(b)(1)(B) (2000). The magistrate judge recommended dismissal of Stacey’s petition as untimely, and advised Stacey that failure to timely file objections to the recommendation could waive appellate review of a district court order based upon the recommendation. Despite this warning, Stacey failed to object to the magistrate judge’s recommendation.

The timely filing of specific objections to a magistrate judge’s recommendation is necessary to preserve appellate review of the substance of that recommendation when the parties have been warned that failure to object will waive appellate review. See Wright v. Collins, 766 F.2d 841, 845-46 (4th Cir.1985); see also Thomas v. Arn, 474 U.S. 140, 106 S.Ct. 466, 88 L.Ed.2d 435 (1985). Stacey has waived appellate review by failing to file objections after receiving proper notice. Even if Stacey’s failure to object is excused, however, he is not entitled to appeal.

The district court’s order is not appealable unless a circuit justice or judge issues a certificate of appealability. 28 U.S.C. § 2253(c) (2000). A certificate of appealability will not issue absent “a substantial showing of the denial of a constitutional right.” 28 U.S.C. § 2253(c)(2) (2000). A prisoner satisfies this standard by demonstrating that reasonable jurists would find that the district court’s assessment of his constitutional claims is debatable or wrong and that any dispositive procedural rulings by the district court are likewise debatable. See Miller-El v.

Cockrell, 537 U.S. 322, 336-38, 123 S.Ct. 1029, 154 L.Ed.2d 931 (2003); Slack v. McDaniel, 529 U.S. 473, 484, 120 S.Ct. 1595, 146 L.Ed.2d 542 (2000); Rose v. Lee, 252 F.3d 676, 683-84 (4th Cir.2001). We have independently reviewed the record and conclude that Stacey has not made the requisite showing. Accordingly, we deny a certificate of appealability and 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