We affirm the trial court’s denial of appellant’s motion to correct sentence. To the extent appellant alleges he is being denied gain time in violation of Waldrup v. Dugger, 562 So.2d 687 (Fla. 1990), our decision is without prejudice to appellant filing a petition for writ of mandamus in the circuit court in and for the county where he is presently confined. See Hall v. Wainwright, 498 So.2d 670 (Fla. 1st DCA 1986).