diff --git a/src/cron/session-target.test.ts b/src/cron/session-target.test.ts
index 127e86007f8d..623df35cc43f 100644
--- a/src/cron/session-target.test.ts
+++ b/src/cron/session-target.test.ts
@@ -3,7 +3,6 @@ import { describe, expect, it } from "vitest";
 import {
   resolveCronCurrentSessionTarget,
   resolveCronDeliverySessionKey,
-  resolveCronFailureNotificationSessionKey,
   resolveCronNotificationSessionKey,
   resolveCronSessionTargetSessionKey,
 } from "./session-target.js";
@@ -65,8 +64,5 @@ describe("cron session target helpers", () => {
     expect(resolveCronNotificationSessionKey({ jobId: "job-1", sessionKey: " " })).toBe(
       "cron:job-1:failure",
     );
-    expect(
-      resolveCronFailureNotificationSessionKey({ id: "job-2", sessionTarget: "isolated" }),
-    ).toBe("cron:job-2:failure");
   });
 });
diff --git a/src/cron/session-target.ts b/src/cron/session-target.ts
index 9209edd8fc0d..70606ba5736c 100644
--- a/src/cron/session-target.ts
+++ b/src/cron/session-target.ts
@@ -63,15 +63,3 @@ export function resolveCronNotificationSessionKey(params: {
     ? params.sessionKey.trim()
     : `cron:${params.jobId}:failure`;
 }
-
-/** Resolves the session key used to deliver failure notifications for a cron job. */
-export function resolveCronFailureNotificationSessionKey(job: {
-  id: string;
-  sessionTarget?: string | null;
-  sessionKey?: string | null;
-}): string {
-  return resolveCronNotificationSessionKey({
-    jobId: job.id,
-    sessionKey: resolveCronDeliverySessionKey(job),
-  });
-}