Michael Adams filed a petition for writ of mandamus in the circuit court challenging a Department of Corrections order withholding 365 days of gaintime. The circuit court denied the petition. We re-designate his appeal from the circuit court’s order as a petition to a writ of certiorari and deny the petition. See Fla. R.App. P. 9.030(2)(B); Sheley v. Florida Parole Comm’n, 720 So.2d 216 (Fla. 1998).