Appellant, James Petron, appeals the denial of his rule 3.800(a) motion to eorrect an illegal sentence. We affirm.

Appellant pled no contest to attempted first degree murder, uttering, battery of a law enforcement officer, and burglary of a dwelling, in 1986. Pursuant to the negotiated plea, the trial court sentenced him to concurrent twenty, three, five, and ten-year sentences, respectively. On the attempted murder count, the trial court also ordered that appellant be placed on probation for the remainder of the twenty years, if he should be released from prison before twenty years had passed. Because of accrued gain-time, Petron was released on December 6, 1990, and placed on probation until March 24, 2005 — twenty years from the date on which he was first placed in custody.

Relying on Heuring v. State, 559 So.2d 207 (Fla. 1990), Petron seeks the cancellation of the probation imposed in the original sentence. Petron’s crime of attempted first degree murder with a firearm was a life felony pursuant to sections 775.087, 777.04, and 782.04, Florida Statutes (1985). His sentence fell well within that limit and was not illegal. See Davis v. State, 661 So.2d 1193 (Fla. 1995). Hence he cannot question it in a 3.800(a) motion.1 We further observe that Heuring was decided in 1990 and at a time subsequent to any opportunity for the trial judge to adjust the sentence had he chosen to do so.2 We conclude that Heuring has no retroactive application to sentences that were final before its rendition.

AFFIRMED.