Larry Coffman, who is civilly committed to the Missouri Sexual Offender Treatment Center, appeals the district court’s 1 preservice dismissal under 28 U.S.C. § 1915(e)(2)(B) of his 42 U.S.C. § 1983 complaint. Following de novo review, see Moore v. Sims, 200 F.3d 1170, 1171 (8th Cir. 2000) (per curiam), we affirm, see 8th Cir. R. 47B, but we modify the dismissal to be without prejudice as to any claims Coffman raised that were barred by Heck v. *864 Humphrey, 512 U.S. 477, 486-87, 114 S.Ct. 2364, 129 L.Ed.2d 383 (1994). See Schafer v. Moore, 46 F.3d 43, 45 (8th Cir. 1995) (per curiam). We also deny Coffman’s request for appointment of appellate counsel.