
    UNITED STATES of America, Plaintiff-Appellee v. Cyron Dondell MORRISON, also known as Kyron Morrison, Defendant-Appellant.
    No. 05-50025.
    Summary Calendar.
    United States Court of Appeals, Fifth Circuit.
    Decided Oct. 27, 2005.
    
      Joseph H. Gay, Jr., Assistant U.S. Attorney, U.S. Attorney’s Office, Western District of Texas, San Antonio, TX, for Plaintiff-Appellee.
    Steven Jay Rozan, Kuniansky & Rozan, Houston, TX, for Defendant-Appellant.
    Before KING, Chief Judge, and WIENER and DeMOSS, Circuit Judges.
   PER CURIAM:

Cyron Dondell Morrison appeals the sentence imposed following his guilty-plea conviction of possession of a firearm by a felon, possession with intent to distribute more than five grams of cocaine base, and using and carrying a firearm during and in relation to a drug trafficking offense. He argues, citing Blakely v. Washington, 542 U.S. 296, 124 S.Ct. 2531, 159 L.Ed.2d 403 (2004), that he should have received a lower sentence due to the sentencing disparity between cocaine base and powder cocaine and because he should not have been sentenced based on the quantity of PCP found as relevant conduct because he was not charged for this conduct.

Because Morrison raises these issues for the first time on appeal, we review only for plain error. See United States v. Mares, 402 F.3d 511, 520 (5th Cir.2005), petition for cert, filed (Mar. 31, 2005) (No. 04-9517). Morrison’s argument that he should have received a lower sentence due to the disparity in the punishment imposed for offenses involving powder cocaine versus those involving cocaine base has been rejected by this court. See United States v. Dixon, 132 F.3d 192, 202-03 (5th Cir. 1997); United States v. Wilson, 77 F.3d 105, 112 (5th Cir.1996). Although United States v. Booker, — U.S. -, 125 S.Ct. 738, 160 L.Ed.2d 621 (2005), applied the reasoning in Blakely to render the federal sentencing guidelines advisory, district courts still must determine the relevant guideline range. See Mares, 402 F.3d at 519. Accordingly, the distinction in the guidelines between sentences imposed for offenses involving cocaine base and those imposed for offenses involving powder cocaine remains intact. Morrison cannot show error because he has not challenged the mandatory application of the guidelines, nor has he established that the district court likely would have imposed a significantly different sentence under an advisory guidelines scheme. See id. at 521.

These failures also render meritless Morrison’s contention that the district court plainly erred by sentencing him based on a quantity of POP that the court found as relevant conduct. The error identified in Booker is not the use of extra verdict enhancements, but rather the use of such enhancements under a mandatory guidelines scheme. See id.

AFFIRMED. 
      
       Pursuant to 5th Cir. R. 47.5, the court has determined that this opinion should not be published and is not precedent except under the limited circumstances set forth in 5th Cir. R. 47.5.4.
     