MEMORANDUM**

California prisoner Lee W. Davis appeals the district court’s denial of his 28 U.S.C. § 2254 petition challenging his guilty-plea conviction for voluntary manslaughter. We have jurisdiction pursuant to 28 U.S.C. § 2253, and we affirm.

*660Davis contends that he was induced to plead guilty by the state’s promise that he would be eligible to earn up to 20% of his sentence in custody credits. However, because state law limited custody credits to a maximum of 15% of Davis’ sentence, he contends that the state breached the plea agreement and that his plea was not knowing and voluntarily made.

Because this court may not grant habeas relief unless the state court’s decision denying these claims was contrary to or an unreasonable application of clearly established federal law, as determined by the United States Supreme Court, we affirm. See Hill v. Lockhart, 474 U.S. 52, 56, 106 S.Ct. 366, 88 L.Ed.2d 203 (1985) (stating the Constitution does not require the state to furnish the defendant with information regarding parole eligibility for the defendant’s guilty plea to be voluntary).

AFFIRMED.