diff --git a/packages/next/src/server/app-render/app-render.tsx b/packages/next/src/server/app-render/app-render.tsx
index 5865195404a1c8..dd24e9f5afecb6 100644
--- a/packages/next/src/server/app-render/app-render.tsx
+++ b/packages/next/src/server/app-render/app-render.tsx
@@ -58,7 +58,11 @@ import { addImplicitTags } from '../lib/patch-fetch'
 import { AppRenderSpan, NextNodeServerSpan } from '../lib/trace/constants'
 import { getTracer } from '../lib/trace/tracer'
 import { FlightRenderResult } from './flight-render-result'
-import { createErrorHandler, type ErrorHandler } from './create-error-handler'
+import {
+  createErrorHandler,
+  type DigestedError,
+  type ErrorHandler,
+} from './create-error-handler'
 import {
   getShortDynamicParamType,
   dynamicParamTypes,
@@ -723,7 +727,7 @@ async function renderToHTMLOrFlightImpl(
     serverModuleMap,
   })
 
-  const digestErrorsMap: Map<string, Error & { digest: string }> = new Map()
+  const digestErrorsMap: Map<string, DigestedError> = new Map()
   const allCapturedErrors: Error[] = []
   const isNextExport = !!renderOpts.nextExport
   const { staticGenerationStore, requestStore } = baseCtx
@@ -759,7 +763,7 @@ async function renderToHTMLOrFlightImpl(
   } as const
 
   // Including RSC rendering and flight data rendering
-  function getRSCError(err: Error & { digest: string }) {
+  function getRSCError(err: DigestedError) {
     const digest = err.digest
     if (!digestErrorsMap.has(digest)) {
       digestErrorsMap.set(digest, err)
@@ -767,7 +771,7 @@ async function renderToHTMLOrFlightImpl(
     return err
   }
 
-  function getSSRError(err: Error & { digest: string }) {
+  function getSSRError(err: DigestedError) {
     // For SSR errors, if we have the existing digest in errors map,
     // we should use the existing error object to avoid duplicate error logs.
     if (digestErrorsMap.has(err.digest)) {
@@ -776,14 +780,14 @@ async function renderToHTMLOrFlightImpl(
     return err
   }
 
-  function onFlightDataRenderError(err: Error & { digest: string }) {
+  function onFlightDataRenderError(err: DigestedError) {
     return onInstrumentationRequestError?.(err, req, {
       ...errorContext,
       renderSource: 'react-server-components-payload',
     })
   }
 
-  function onServerRenderError(err: Error & { digest: string }) {
+  function onServerRenderError(err: DigestedError) {
     const renderSource = digestErrorsMap.has(err.digest)
       ? 'react-server-components'
       : 'server-rendering'
diff --git a/packages/next/src/server/app-render/create-error-handler.tsx b/packages/next/src/server/app-render/create-error-handler.tsx
index 3cdf644bbcf54f..4b490855d0695b 100644
--- a/packages/next/src/server/app-render/create-error-handler.tsx
+++ b/packages/next/src/server/app-render/create-error-handler.tsx
@@ -15,6 +15,8 @@ export type ErrorHandler = (
   errorInfo: unknown
 ) => string | undefined
 
+export type DigestedError = Error & { digest: string }
+
 /**
  * Create error handler for renderers.
  * Tolerate dynamic server errors during prerendering so console
@@ -31,7 +33,7 @@ export function createErrorHandler({
   dev?: boolean
   isNextExport?: boolean
   onReactStreamRenderError?: (err: any) => void
-  getErrorByRenderSource: (err: Error & { digest: string }) => Error
+  getErrorByRenderSource: (err: DigestedError) => Error
   allCapturedErrors?: Error[]
   silenceLogger?: boolean
 }): ErrorHandler {
diff --git a/test/e2e/on-request-error/basic/basic.test.ts b/test/e2e/on-request-error/basic/basic.test.ts
index 7fd93b7da89ef7..f63c0f96396f8f 100644
--- a/test/e2e/on-request-error/basic/basic.test.ts
+++ b/test/e2e/on-request-error/basic/basic.test.ts
@@ -27,7 +27,7 @@ describe('on-request-error - basic', () => {
   }: {
     name: string
     url: string
-    renderSource?: string
+    renderSource: string | undefined
     isMiddleware?: boolean
   }) {
     await retry(async () => {
@@ -62,7 +62,7 @@ describe('on-request-error - basic', () => {
   }: {
     payload: any
     url: string
-    renderSource?: string
+    renderSource: string | undefined
     isMiddleware: boolean
   }) {
     const { request } = payload
@@ -74,9 +74,7 @@ describe('on-request-error - basic', () => {
       expect(request.url).toBe(url)
     }
 
-    if (renderSource) {
-      expect(payload.context.renderSource).toBe(renderSource)
-    }
+    expect(payload.context.renderSource).toBe(renderSource)
 
     expect(request.method).toBe('GET')
     expect(request.headers['accept']).toBe('*/*')
@@ -128,6 +126,7 @@ describe('on-request-error - basic', () => {
       await validateErrorRecord({
         name: 'route-node-error',
         url: '/app-route',
+        renderSource: undefined,
       })
     })
 
@@ -136,6 +135,7 @@ describe('on-request-error - basic', () => {
       await validateErrorRecord({
         name: 'route-edge-error',
         url: '/app-route/edge',
+        renderSource: undefined,
       })
     })
   })
@@ -146,6 +146,7 @@ describe('on-request-error - basic', () => {
       await validateErrorRecord({
         name: 'pages-page-node-error',
         url: '/page',
+        renderSource: undefined,
       })
     })
 
@@ -154,6 +155,7 @@ describe('on-request-error - basic', () => {
       await validateErrorRecord({
         name: 'pages-page-edge-error',
         url: '/page/edge',
+        renderSource: undefined,
       })
     })
 
@@ -162,6 +164,7 @@ describe('on-request-error - basic', () => {
       await validateErrorRecord({
         name: 'api-node-error',
         url: '/api/pages-route',
+        renderSource: undefined,
       })
     })
 
@@ -170,6 +173,7 @@ describe('on-request-error - basic', () => {
       await validateErrorRecord({
         name: 'api-edge-error',
         url: '/api/pages-route/edge',
+        renderSource: undefined,
       })
     })
   })
@@ -181,6 +185,7 @@ describe('on-request-error - basic', () => {
         name: 'middleware-error',
         url: '/middleware-error',
         isMiddleware: true,
+        renderSource: undefined,
       })
     })
   })