diff --git a/src/shared/pr-check-severity-order.ts b/src/shared/pr-check-severity-order.ts
index db0230d37dd..b6a430586e2 100644
--- a/src/shared/pr-check-severity-order.ts
+++ b/src/shared/pr-check-severity-order.ts
@@ -25,12 +25,11 @@ export function getCheckSeverityRank(conclusion: string | null | undefined): num
 export function sortChecksBySeverity<T extends Pick<PRCheckDetail, 'conclusion'>>(
   checks: readonly T[]
 ): T[] {
+  if (checks.length < 2) {
+    return checks.slice()
+  }
   return checks
-    .map((check, index) => ({ check, index }))
-    .sort(
-      (a, b) =>
-        getCheckSeverityRank(a.check.conclusion) - getCheckSeverityRank(b.check.conclusion) ||
-        a.index - b.index
-    )
+    .map((check, index) => ({ check, index, rank: getCheckSeverityRank(check.conclusion) }))
+    .sort((a, b) => a.rank - b.rank || a.index - b.index)
     .map(({ check }) => check)
 }