diff --git a/ui/job-view/headerbars/TierIndicator.jsx b/ui/job-view/headerbars/TierIndicator.jsx
index ee895be07..d68e063f7 100644
--- a/ui/job-view/headerbars/TierIndicator.jsx
+++ b/ui/job-view/headerbars/TierIndicator.jsx
@@ -22,6 +22,7 @@ export default function TierIndicator(props) {
             }
             disabled={isOnlyTier}
             outline={!shownTiers.includes(tier)}
+            key={tier}
           >
             {tier}
           </Button>