¶1OPINION ON APPELLANT’S PETITION FOR DISCRETIONARY REVIEW
¶2Appeal is taken from a conviction for the offense of delivery of a controlled substance, to-wit: heroin. After finding appellant guilty, the jury assessed punishment at 21 years’ imprisonment.
¶3On direct appeal, appellant argued the trial court erred in instructing the jury on the law concerning good time and parole, inasmuch as the charge is predicated upon an unconstitutional statute. The Court of Appeals rejected appellant’s challenge to Article 37.07, § 4, V.A.C.C.P. Aranda v. State, 723 S.W.2d 788 (Tex.App.—El Paso 1987).
¶4In his petition for discretionary review, appellant urges the Court of Appeals erred in holding Article 37.07, § 4, supra, is constitutional. We find appellant is correct.
¶5In Rose v. State, 752 S.W.2d 529 (Tex.Cr.App.1988), this Court determined that Article 37.07, § 4, is unconstitutional. Under Rose, supra, if a harmless error analysis is necessary, such analysis should be conducted under the guidelines of Tex.R.App.P. 81(b)(2).
¶6The judgment of the Court of Appeals is vacated and this cause is remanded to that court for further proceedings consistent with this opinion.