diff --git a/site/content/tutorial/06-bindings/10-media-elements/app-b/App.svelte b/site/content/tutorial/06-bindings/10-media-elements/app-b/App.svelte
index 8712d6718b..2a83c65820 100644
--- a/site/content/tutorial/06-bindings/10-media-elements/app-b/App.svelte
+++ b/site/content/tutorial/06-bindings/10-media-elements/app-b/App.svelte
@@ -116,7 +116,9 @@
 		bind:currentTime={time}
 		bind:duration
 		bind:paused
-	></video>
+	>
+		<track src="" kind="captions">
+	</video>
 
 	<div class="controls" style="opacity: {duration && showControls ? 1 : 0}">
 		<progress value="{(time / duration) || 0}"/>
@@ -127,4 +129,4 @@
 			<span class="time">{format(duration)}</span>
 		</div>
 	</div>
-</div>
\ No newline at end of file
+</div>