Akbar Rashada, an inmate at the federal penitentiary in Beaumont, Texas, pleaded *334 guilty to possessing a prohibited object (namely, a metal weapon) within the territorial jurisdiction of the United States. Rashada was sentenced to 27 months of imprisonment and a two-year term of supervised release. He argues that, in light of United States v. Booker, — U.S. -, 125 S.Ct. 738, 160 L.Ed.2d 621 (2005), his sentence is invalid because the district court applied the sentencing guidelines as if they were mandatory. We review for plain error. See United States v. Valenzuela-Quevedo, 407 F.3d 728, 733 (5th Cir. 2005), petition for cert. filed (July 25, 2005) (No. 05-5556).

Rashada is unable to establish reversible plain error with regard to his Booker claim because he cannot establish that being sentenced under a mandatory sentencing guidelines scheme affected his substantial rights. The record does not indicate that the district court would have reached a significantly different result under a sentencing scheme in which the guidelines were advisory only. See Valenzuela-Quevedo, 407 F.3d at 733-34.

Accordingly, the judgment of the district court is AFFIRMED.