Andreas Kascelo Spencer petitioned the circuit court for a writ of habeas corpus, contending that the Department of Corrections improperly forfeited gain-time when petitioner’s probation was revoked. We treat this appeal as a petition for writ of certiorari. See Sheley v. Florida Parole Commission, 703 So.2d 1202 (Fla. 1st DCA 1997), review granted, Case No. 92,260, — So.2d — (Fla. May 19, 1998). The petition is denied.