diff --git a/12/index.html b/12/index.html
index 79450cf..5d885ff 100644
--- a/12/index.html
+++ b/12/index.html
@@ -111,7 +111,7 @@
         <source src="archive_12.5.mp3" type="audio/mp3">
         <track default kind="captions"
                srclang="en"
-               src="archive_12.5.vtt"/>
+               src="archive_12.5.vtt">
       </audio>
       <div class="icon" id="clock_icon"><img src="IMG/clock.png" width="100" height="100"></div>
       <div class="icon" id="TOC_icon"><img src="IMG/program.png" width="100" height="100"></div>