diff --git a/doc/api/perf_hooks.md b/doc/api/perf_hooks.md
index d3978958c5081f..cbdd34bdb52830 100644
--- a/doc/api/perf_hooks.md
+++ b/doc/api/perf_hooks.md
@@ -647,7 +647,7 @@ const {
 } = require('perf_hooks');
 
 const obs = new PerformanceObserver((list, observer) => {
-  // Called three times synchronously. `list` contains one item.
+  // Called once asynchronously. `list` contains three items.
 });
 obs.observe({ type: 'mark' });