
630 S.E.2d 528 (2006)
279 Ga. App. 97
JEFFERSON
v.
The STATE.
No. A06A0601.
Court of Appeals of Georgia.
March 28, 2006.
Reconsideration Denied April 26, 2006.
Bobby R. Jefferson, Buford, pro se.
T. Joseph Campbell, District Attorney, for appellee.
MIKELL, Judge.
Bobby Ray Jefferson appeals pro se from the trial court's order denying his motion to vacate illegal sentence. See generally Williams v. State, 271 Ga. 686, 689(1), 523 S.E.2d 857 (1999) (a direct appeal lies from the denial of a motion attacking a sentence on the grounds that the sentence is void). We affirm because Jefferson has failed to show that his sentence was improper.
A Bartow County grand jury indicted Jefferson for the crimes of aggravated assault (OCGA § 16-5-21(a)(2)), armed robbery (OCGA § 16-8-41(a)), possession of a firearm during the commission of a crime (OCGA § 16-11-106), and theft by taking (OCGA § 16-8-2). On August 14, 2000, following a guilty plea, the trial court sentenced Jefferson to life in custody for armed robbery, five years in custody for possession of a firearm during the commission of a crime, to run consecutively with the life sentence, and ten years in custody for theft by taking, to run concurrently with the life sentence.[1] On *529 March 28, 2005, Jefferson filed a motion to vacate illegal sentence. The trial court subsequently denied the motion.
Jefferson claims that he was punished as a recidivist but that his enhanced punishment was improper because it was based on evidence of an "uncertified, non-final disposition" from the State of Louisiana. However, there is nothing in the record before us to substantiate Jefferson's claims that he was sentenced as a recidivist or that he received enhanced punishment based on a Louisiana "disposition."
The burden is always on the appellant in asserting error to show it affirmatively by the record. This court will not consider factual assertions in the brief unsupported by the record. Neither will we assume error. Since this is a court for correction of errors of law, our decision must be made upon the record and not upon [appellate] briefs. . . . Where there is nothing in the record to support the contention of error, there is nothing presented to this court for review.
(Citations and punctuation omitted.) Kellam v. State, 271 Ga.App. 125, 126-127, 608 S.E.2d 729 (2004). Furthermore, "a trial court [is] authorized to sentence a defendant to life imprisonment for armed robbery, even when the defendant [is] not a recidivist." Johnson v. State, 274 Ga.App. 848, 849(2), 619 S.E.2d 488 (2005). See OCGA § 16-8-41(b) (authorizing "imprisonment for life" as punishment for conviction of armed robbery); Worley v. State, 265 Ga. 251, 253(1), 454 S.E.2d 461 (1995). As Jefferson has failed to show any defect in his sentence, the trial court's order denying his motion to vacate illegal sentence must be affirmed.
Judgment affirmed.
BLACKBURN, P.J., and ADAMS, J., concur.
NOTES
[1]  The trial court merged aggravated assault into armed robbery for purposes of sentencing.
