diff --git a/site/content/docs/03-run-time.md b/site/content/docs/03-run-time.md
index 846e09d774..b35af93838 100644
--- a/site/content/docs/03-run-time.md
+++ b/site/content/docs/03-run-time.md
@@ -102,7 +102,7 @@ onDestroy(callback: () => void)
 
 ---
 
-Schedules a callback to run once the component is unmounted.
+Schedules a callback to run immediately before the component is unmounted.
 
 Out of `onMount`, `beforeUpdate`, `afterUpdate` and `onDestroy`, this is the only one that runs inside a server-side component.