SUMMARY ORDER

Petitioner-Appellant Russell Bretan pleaded guilty on July 10, 2003, in the U.S. District Court for the Southern District of New York (Kaplan, J.), to all counts of a four-count indictment charging him with possession of child pornography, receipt of child pornography, attempted possession of child pornography, and attempted receipt of child pornography, all in violation of 18 U.S.C. § 2252A. On January 16, 2004, Judge Kaplan sentenced Bretan to a 57-month term of imprisonment, and to a three-year term of supervised release. Bretan did not appeal his conviction or sentence.

On January 27, 2005 Bretan filed the instant petition, pursuant to 28 U.S.C. § 2255, in the U.S. District Court for the Southern District of New York, seeking to vacate, set aside, or correct his sentence.1 He filed an amended petition on July 8, 2005 requesting the same relief. In a memorandum opinion, dated January 31, 2006, Judge Kaplan denied the petition and certified two questions for appeal: (1) Whether the U.S. Supreme Court’s decision in U.S. v. Booker, 543 U.S. 220, 125 S.Ct. 738, 160 L.Ed.2d 621 (2005), is applicable to cases on collateral review; and (2) Whether Bretan was denied effective assistance of counsel, in violation of the Sixth Amendment, because of his prior attorney’s “failure to argue the unconstitutionality of the United States Sentencing Guidelines [at Bretan’s sentencing] and to appeal from any adverse judgment on that claim.” Bretan v. United States, Nos. 05 Civ. 916(LAK), 03 Cr. 358, 2006 WL 238994 at *8 (S.D.N.Y. Jan. 31, 2006). In a memorandum opinion, dated February 14, 2006, Judge Kaplan denied Bretan’s motion for reconsideration. See Bretan v. United States, 415 F.Supp.2d 351 (S.D.N.Y. 2006). Bretan filed a notice of appeal, dated February 21, 2006, challenging “each and every aspect” of Judge Kaplan’s two orders. We assume the parties’ familiarity with the facts, proceedings below, and specification of appellate issues.

*934A. Bretan’s Ineffective Assistance of Counsel Claim. It is the crux of the instant petition that three months before Bretan’s sentencing, the U.S. Supreme Court granted certiorari to review the constitutionality of Washington State’s sentencing guidelines. See Blakely v. Washington, 540 U.S. 965, 124 S.Ct. 429, 157 L.Ed.2d 309 (2003). The Supreme Court decided Blakely on June 24, 2004, holding that Washington State’s sentencing guidelines violated the Sixth Amendment. See Blakely v. Washington, 542 U.S. 296, 124 S.Ct. 2531, 159 L.Ed.2d 403 (2004). On January 12, 2005 the Supreme Court decided Booker, which extended the logic of Blakely in holding that the Federal Sentencing Guidelines similarly violated the Sixth Amendment. 543 U.S. at 245, 125 S.Ct. 738. The practical effect of Booker was the excision of those sections making application of the Federal Sentencing Guidelines mandatory, thereby rendering the Guidelines advisory. Id. at 245-46, 125 S.Ct. 738. It is Bretan’s contention that his prior counsel’s ignorance of the grant of certiorari in Blakely and his failure to argue the unconstitutionality of the Federal Sentencing Guidelines at Bretan’s sentencing denied him any chance of receiving the purported benefits of being resentenced under a regime of advisory sentencing guidelines.

In order to show that his prior counsel was ineffective, Bretan must demonstrate: (1) that counsel’s performance was deficient and (2) that such performance prejudiced him. Strickland v. Washington, 466 U.S. 668, 687, 104 S.Ct. 2052, 80 L.Ed.2d 674 (1984). Deficiency in this regard means that Bretan’s prior counsel’s performance was not “within the range of competence demanded of attorneys in criminal cases.” Id. If we find that prior counsel’s performance was not deficient within the meaning of Strickland, we have no need to address Bretan’s claims of prejudice. See id. at 697, 104 S.Ct. 2052.

We have no difficulty finding that Bretan received constitutionally effective counsel at sentencing. Bretan focused exclusively upon his prior counsel’s failure to make an argument at sentencing based upon the demise of the Federal Sentencing Guidelines fortold by the grant of certiorari in Blakely, thereby foregoing an appeal based upon this argument. Strickland, however, requires us to consider “all the circumstances ” which might have effected the strategic decisions of counsel. 466 U.S. at 688, 104 S.Ct. 2052 (emphasis added). At sentencing, Judge Kaplan granted Bretan’s request for a downward departure based upon his minor role in the offense, and denied the Government’s request for a five-level enhancement based upon Bretan’s trading of child pornography. Thus, any decision to appeal Bretan’s sentence faced the possibility of a cross-appeal on the part of the Government, which might have resulted in the reversal of the downward departure, or even the grant of the Government’s request for an enhanced sentence. “We will not normally fault counsel for foregoing a potentially fruitful course of conduct if that choice also entails a ‘significant potential downside.’” Greiner v. Wells, 417 F.3d 305, 319 (2d Cir. 2005), cert. denied sub nom. Wells v. Ercole, 546 U.S. 1184, 126 S.Ct. 1363, 164 L.Ed.2d 72 (2006), (quoting Sacco v. Cooksey, 214 F.3d 270, 275 (2d Cir. 2000)). Whether or not an appeal asserting the unconstitutionality of the Federal Sentencing Guidelines amounted to a potentially fruitful course of conduct, the significant potential downside of a Government cross-appeal was present in Bretan’s case, and we will not fault his attorney for foregoing an appeal in light of it.

B. Retroactivity of Booker. This Court has declined to apply Booker *935on collateral review. See Guzman v. U.S., 404 F.3d 139 (2d Cir. 2005), cert. denied, 546 U.S. 1035, 126 S.Ct. 731, 163 L.Ed.2d 577 (2005). Bretan argues that Guzman was wrongly decided and Judge Kaplan granted a certificate of appealability on the issue so that Bretan’s argument might be preserved in light of the fact that the Supreme Court has yet to decide the issue. We see no reason to reconsider our holding in Guzman here.

C. Request for an Evidentiary Hearing. Even though Judge Kaplan denied a certificate of appealability on the issue, Bretan contends that this Court should remand his petition to the district court for an evidentiary hearing as to “the veracity or wisdom” of his (Bretan’s) assertion that he definitely would have appealed his sentence but for his prior counsel’s ignorance of the grant of certiorari in Blakely. This, Bretan asserts, would allow him to satisfy the prejudice requirement of Strickland. Because we have found that Bretan did not receive ineffective assistance of counsel within the meaning of Strickland, what Bretan would have done but for his prior counsel’s ignorance is of no moment.

For the reasons stated above, the judgment of conviction and sentence imposed by the district court is hereby AFFIRMED.