diff --git a/404.html b/404.html
index aaee97c..d235d17 100644
--- a/404.html
+++ b/404.html
@@ -84,6 +84,6 @@ <h2>外部リンク</h2>
   <div id="copyright">
       <p>&copy; 2023 ProteCat by otoneko.</p>
   </div>
-  <a id="secretButton" href="secret/click.html">🤔</a>
+  <a id="secretButton" href="/secret/click.html">🤔</a>
 </body>
 </html>