Joel Lopez-Fernandez (Lopez), federal prisoner # 06964-030, appeals the denial of his 28 U.S.C. § 2241 petition challenging his methamphetamine and firearms convictions. The district court determined that Lopez’s claims collaterally attacked his conviction and, as such, he was precluded from proceeding via § 2241 because he had failed to show the 28 U.S.C. § 2255 remedy inadequate. See Reyes-Requena v. United States, 243 F.3d 893, 904 (5th Cir. 2001). Lopez has failed to assign error to or address that determination and has therefore waived its review. See Yohey v. Collins, 985 F.2d 222, 224-25 (5th Cir. 1993).

AFFIRMED.