diff --git a/site/content/tutorial/07-lifecycle/02-ondestroy/app-a/Timer.svelte b/site/content/tutorial/07-lifecycle/02-ondestroy/app-a/Timer.svelte
index 8590b39971..54346ea2f2 100644
--- a/site/content/tutorial/07-lifecycle/02-ondestroy/app-a/Timer.svelte
+++ b/site/content/tutorial/07-lifecycle/02-ondestroy/app-a/Timer.svelte
@@ -8,7 +8,7 @@
 </script>
 
 <p>
-	This component execute callback every 
+	This component execute a callback every 
 	{interval} millisecond{interval === 1 ? '' : 's'}
 </p>
 
diff --git a/site/content/tutorial/07-lifecycle/02-ondestroy/app-b/Timer.svelte b/site/content/tutorial/07-lifecycle/02-ondestroy/app-b/Timer.svelte
index 8590b39971..54346ea2f2 100644
--- a/site/content/tutorial/07-lifecycle/02-ondestroy/app-b/Timer.svelte
+++ b/site/content/tutorial/07-lifecycle/02-ondestroy/app-b/Timer.svelte
@@ -8,7 +8,7 @@
 </script>
 
 <p>
-	This component execute callback every 
+	This component execute a callback every 
 	{interval} millisecond{interval === 1 ? '' : 's'}
 </p>