diff --git a/index.html b/index.html
index 7e65ee1..862d606 100644
--- a/index.html
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@@ -25,7 +25,7 @@ <h1>Codevember 2021</h1>
         <li><a href="./11">11. speed</a></li>
         <li><a href="./12">12. volume</a></li>
         <li><a href="./13">13. light</a></li>
-        <li><a href="./14">13. letter</a></li>
+        <li><a href="./14">14. letter</a></li>
       </ul>
     </div>
     <p><a href="https://github.com/spite/codevember-2021">GitHub repo</a></p>