We affirm the summary denial of the defendant’s rule 3.800(a) motion to correct illegal sentence. The defendant challenges the Department of Corrections’ interpretation of his sentence. Our affirmance is without prejudice to the defendant pursuing his administrative remedies against the Department, after which, he can file a petition for writ of mandamus in the ap*837propriate circuit court. See Smith v. State, 785 So.2d 1237 (Fla. 4th DCA 2001).