Scott Reel appeals from the order of the District Court 1 affirming the denial of disability insurance benefits and supplemental security income. After de novo review, see Van Vickle v. Astrue, 539 F.3d 825, 828 (8th Cir. 2008), we conclude that Reel failed to meet his burden of proving that his alcoholism was not a contributing factor material to the Commissioner’s determination that he is disabled, see Kluesner v. Astrue, 607 F.3d 533, 537 (8th Cir. 2010). 2 Accordingly, we affirm.