diff --git a/docs/advanced-features/measuring-performance.md b/docs/advanced-features/measuring-performance.md
index 789d94bb8759c..0a861b416473d 100644
--- a/docs/advanced-features/measuring-performance.md
+++ b/docs/advanced-features/measuring-performance.md
@@ -164,7 +164,7 @@ export function reportWebVitals(metric) {
 > ```js
 > export function reportWebVitals({ id, name, label, value }) {
 >   // Use `window.gtag` if you initialized Google Analytics as this example:
->   // https://github.com/vercel/next.js/blob/canary/examples/with-google-analytics/pages/_document.js
+>   // https://github.com/vercel/next.js/blob/canary/examples/with-google-analytics/pages/_app.js
 >   window.gtag('event', name, {
 >     event_category:
 >       label === 'web-vital' ? 'Web Vitals' : 'Next.js custom metric',