Appellant filed, without reference to Florida Rule of Criminal Procedure 3.800(c), a letter seeking a sentence modification or mitigation. The trial court treated the letter as a rule 3.800(c) motion and denied the motion on the merits. We dismiss the appeal as from a non-appealable order. See State v. Woodard, 866 So.2d 120 (Fla. 4th DCA 2004); Grosse v. State, 511 So.2d 688 (Fla. 4th DCA 1987), rev. denied, 519 So.2d 987 (Fla. 1988).