Francisco Lopez, federal prisoner # 56053-079, was convicted in the Western *25 District of Louisiana. At that time, he was serving a sentence in the Northern District of Texas for a related drug conviction. He filed a motion pursuant to Fed. R.CrimP. 36 seeking to have his Louisiana judgment corrected so that he can receive credit for the time served on his federal conviction in Texas before beginning his federal sentence in Louisiana. The district court denied the motion and Lopez’s application to proceed in forma pauperis (“IFP”) on appeal. Lopez now appeals the denial of IFP status.

A movant for leave to proceed IFP on appeal must show that he is a pauper and that the appeal is taken in good faith, i.e., that it presents a nonfrivolous issue. See Carson v. Polley, 689 F.2d 562, 586 (5th Cir. 1982). “Frivolous” is defined as “lackpng] an arguable basis in law or fact.” Taylor v. Johnson, 257 F.3d 470, 472 (5th Cir. 2001). If the appeal is frivolous, this court may dismiss it sua sponte. Baugh v. Taylor, 117 F.3d 197, 202 & n. 24 (5th Cir. 1997); 5th Cir. R. 42.2. A claim for time served before the date of a federal sentence is not cognizable in a proceeding pursuant to Fed.R.Crim.P. 36. See United States v. Mares, 868 F.2d 151, 151 (5th Cir. 1989).

Lopez’s appeal thus presents no nonfiivolous issue. Accordingly, the motion to proceed IFP is DENIED, and the appeal is DISMISSED as frivolous. See 5th Cir. R. 42.2.