
    UNITED STATES of America, Plaintiff-Appellee, v. Josand FARMER, a/k/a Johan Farmer, Defendant-Appellant.
    No. 16-7691
    United States Court of Appeals, Fourth Circuit.
    Submitted: March 30, 2017
    Decided: April 4, 2017
    Josand Farmer, Appellant Pro Se. Jennifer P. May-Parker, Seth Morgan Wood, Assistant United States Attorneys, Raleigh, North Carolina, for Appellee.
    Before TRAXLER and WYNN, Circuit Judges, and HAMILTON, Senior Circuit Judge.
   Dismissed by unpublished per curiam opinion.

Unpublished opinions are not binding precedent in this circuit.

PER CURIAM:

Josand Farmer seeks to appeal from the district court’s order denying his motion challenging the enhancement of his sentence under 21 U.S.C. § 851 (2012). We conclude that Farmer’s motion was in substance a successive 28 U.S.C. § 2255 (2012) motion.

The district court’s order is not appeal-able unless a circuit justice or judge issues a certifícate of appealability. 28 U.S.C. § 2253(c)(1)(B) (2012). A certificate of ap-pealability will not issue absent “a substantial showing of the denial of a constitutional right.” 28 U.S.C. § 2258(c)(2) (2012). When the district court denies relief on the merits, a prisoner satisfies this standard by demonstrating that reasonable jurists would find that the district court’s assessment of the constitutional claims is debatable or wrong. Slack v. McDaniel, 529 U.S. 473, 484, 120 S.Ct. 1595, 146 L.Ed.2d 542 (2000); see Miller-El v. Cockrell, 537 U.S. 322, 336-38, 123 S.Ct. 1029, 154 L.Ed.2d 931 (2003). When the district court denies relief on procedural grounds, the prisoner must demonstrate both that the dispositive procedural ruling is debatable, and that the motion states a debatable claim of the denial of a constitutional right. Slack, 529 U.S. at 484-85, 120 S.Ct. 1595.

We have independently reviewed the record and conclude that.Farmer has not made the requisite showing. The district court lacked jurisdiction to deny § 2255 relief on the merits because Farmer’s motion challenged the validity of his sentence and should have been construed as a successive § 2255 motion. See Gonzalez v. Crosby, 545 U.S. 524, 531-32, 125 S.Ct. 2641, 162 L.Ed.2d 480 (2005); United States v. Winestock, 340 F.3d 200, 207 (4th Cir. 2003). In the absence of pre-filing authorization from this court, the district court lacked jurisdiction to hear a successive § 2255 motion. See 28 U.S.C. § 2244(b)(3) (2012).

Accordingly, we deny a certificate of appealabihty and dismiss the appeal. We dispense with oral argument because the facts and legal contentions are adequately presented in the materials before this court and argument would not aid the decisional process.

DISMISSED  