diff --git a/info/index.html b/info/index.html
index 6e1752b..c4e1274 100644
--- a/info/index.html
+++ b/info/index.html
@@ -32,7 +32,7 @@
                 <li class="guide-li"><a href="zoom.html">Zoom音声トラブルの際はこちら</a></li>
                 <li class="guide-li"><a href="JDchokai-explain.html">JD説明シート</a></li>
                 <li class="guide-li"><a href="csv-explain.html">CSV説明シート</a></li>
-                <li class="guide-li"><a href="koekimail.html">CSV説明シート</a></li>
+                <li class="guide-li"><a href="koekimail.html">koeki MAILの使い方</a></li>
             </ul>
         
         <div>