diff --git a/src/cron/run-id.ts b/src/cron/run-id.ts
new file mode 100644
index 00000000000..4306c6d5a41
--- /dev/null
+++ b/src/cron/run-id.ts
@@ -0,0 +1,3 @@
+export function createCronExecutionId(jobId: string, startedAt: number): string {
+  return `cron:${jobId}:${startedAt}`;
+}
diff --git a/src/cron/service/ops.ts b/src/cron/service/ops.ts
index f9c8f6f437a..3cfd8243aa4 100644
--- a/src/cron/service/ops.ts
+++ b/src/cron/service/ops.ts
@@ -6,6 +6,7 @@ import {
   createRunningTaskRun,
   failTaskRunByRunId,
 } from "../../tasks/detached-task-runtime.js";
+import { createCronExecutionId } from "../run-id.js";
 import type { CronJob, CronJobCreate, CronJobPatch } from "../types.js";
 import {
   applyJobPatch,
@@ -394,10 +395,6 @@ type ManualRunPreflightResult =
 
 let nextManualRunId = 1;
 
-function createCronTaskRunId(jobId: string, startedAt: number): string {
-  return `cron:${jobId}:${startedAt}`;
-}
-
 async function skipInvalidPersistedManualRun(params: {
   state: CronServiceState;
   job: CronJob;
@@ -445,7 +442,7 @@ function tryCreateManualTaskRun(params: {
   job: CronJob;
   startedAt: number;
 }): string | undefined {
-  const runId = createCronTaskRunId(params.job.id, params.startedAt);
+  const runId = createCronExecutionId(params.job.id, params.startedAt);
   try {
     createRunningTaskRun({
       runtime: "cron",
diff --git a/src/cron/service/timer.ts b/src/cron/service/timer.ts
index 70bf50dbfd4..80d0c51f32d 100644
--- a/src/cron/service/timer.ts
+++ b/src/cron/service/timer.ts
@@ -10,6 +10,7 @@ import {
 } from "../../tasks/detached-task-runtime.js";
 import { clearCronJobActive, markCronJobActive } from "../active-jobs.js";
 import { resolveCronDeliveryPlan } from "../delivery-plan.js";
+import { createCronExecutionId } from "../run-id.js";
 import { sweepCronRunSessions } from "../session-reaper.js";
 import type {
   CronDeliveryStatus,
@@ -130,16 +131,12 @@ export function normalizeCronRunErrorText(err: unknown): string {
   return String(err);
 }
 
-function createCronTaskRunId(jobId: string, startedAt: number): string {
-  return `cron:${jobId}:${startedAt}`;
-}
-
 function tryCreateCronTaskRun(params: {
   state: CronServiceState;
   job: CronJob;
   startedAt: number;
 }): string | undefined {
-  const runId = createCronTaskRunId(params.job.id, params.startedAt);
+  const runId = createCronExecutionId(params.job.id, params.startedAt);
   try {
     createRunningTaskRun({
       runtime: "cron",