EHRLICH, Chief Justice.
We have for review Glendening v. State, 503 So.2d 335 (Fla.2d DCA 1987), in which the district court expressly declared valid section 90.803(23), Florida Statutes (1985). We have jurisdiction. Art. V, § 3(b)(3), Fla. Const.
On July 26, 1985, Glendening was charged by information with sexual battery upon a child eleven years of age or younger, in violation of section 794.011(2), Florida Statutes (1985). The acts upon which the charge was based were alleged to have occurred between September 1, 1984 and June 24, 1985. The alleged victim was Glendening’s three-and-one-half-year-old daughter.
Glendening was found guilty of the charged offense and received a life sentence with a mandatory minimum twenty-five years of incarceration. On appeal, the Second District Court of Appeal affirmed Glendening’s conviction and sentence, rejecting the arguments that the trial court erred in admitting out-of-court statements made by the young victim under section 90.803(23), Florida Statutes (1985).
Glendening now seeks review of the decision of the Second District Court of Appeal. As the district court below noted, the major thrust of Glendening’s argument involves the constitutionality of section 90.803(23), its applicability to his case, and compliance with the section’s requirements. Section 90.803(23) is a hearsay exception which permits, under certain circumstances, the introduction of out-of-court statements made by a child victim of sexual abuse describing any act of child abuse, sexual abuse, or any other offense involving an unlawful sexual act, contact, intrusion, or penetration performed in the presence of, with, by, or on the declarant child, if the child has a physical, mental, emotional, or developmental age of eleven or less.
We first reject Glendening’s contention that section 90.803(23) is unconstitutional on its face. Glendening relies upon the arguments set forth in the brief of Petitioner Perez filed in the case of Perez v. State, Case No. 70,027 in regard to this issue. We rejected these arguments in our decision in Perez v. State, 536 So.2d 206 (Fla.1988), released simultaneously with the present decision.
We next address Glendening’s argument that because he was charged with an offense occurring before the effective date of section 90.803(23), application of the new hearsay exception to his case violated the prohibition against
ex post facto laws. The United States Supreme Court has stated that there has been no attempt to precisely delimit the scope of the phrase
“ex post facto law.” One statement of the characteristics of an
ex post facto law set forth by the Supreme Court, however, provided that “ ‘any statute which punishes as a crime an act previously committed, which was innocent when done; which makes more burdensome the punishment for a crime, after its commission, or which deprives one charged with crime of any defense available according to law at the time when the act was committed, is prohibited as
ex post facto.’ ”
Dobbert v. Florida, 432 U.S. 282, 292, 97 S.Ct. 2290, 2297, 53 L.Ed.2d 344 (1977) (quoting
Beazell v. Ohio, 269 U.S. 167, 169-70, 46 S.Ct. 68, 69, 70 L.Ed. 216 (1925)). Another formulation, reiterated recently in
Miller v. Florida, also provides that “ ‘[ejvery law that alters the legal rules "of evidence, and receives less, or different testimony, than the law required at the time of the commission of the offense, in order to convict the offender’ ” violates the prohibition against
ex post facto laws.
482 U.S. 423, 107 S.Ct. 2446,