Pablo Favela-Corral pleaded guilty to conspiring to distribute and possess with intent to distribute 500 grams or more of methamphetamine, in violation of 21 U.S.C. § 846. At sentencing, the district court 1 assessed a 2-level enhancement under U.S.S.G. § 2Dl.l(b)(l) for possession *891 of a dangerous weapon, and sentenced Favela-Corral to 188 months imprisonment and 5 years supervised release. On appeal, Favela-Corral challenges the weapon enhancement, arguing that the mere presence of an unloaded firearm did not provide the necessary nexus to the drug offense.

We conclude that the district court did not clearly err in assessing the weapon enhancement. See United States v. Braggs, 317 F.3d 901, 904 (8th Cir. 2003) (standard of review; government has burden of proof by preponderance of evidence). In a bedroom of Favela-Corral’s home, police found a semiautomatic rifle under the mattress and packages of methamphetamine in a wall vent. See United States v. Frazier, 280 F.3d 835, 853 (8th Cir.) (nexus between drug offense and weapon was established where firearm was stored in same location as drugs; government need not prove that firearm was loaded and ready for use to support enhancement), cer t. denied, 537 U.S. 911, 123 S.Ct. 255, 154 L.Ed.2d 191 (2002).

Accordingly, we affirm.