diff --git a/info/index.html b/info/index.html
index 7166569..17c1d7e 100644
--- a/info/index.html
+++ b/info/index.html
@@ -26,7 +26,7 @@
                 <li class="guide-li"><a href="S4の使い方.pdf">s4の使い方</a></li>
                 <li class="guide-li"><a href="typing.html">タイピングのすゝめ</a></li>
                 <li class="guide-li"><a href="ZOOM_Use.pdf">ZOOMの使い方</a></li>
-                <li class="guide-li"><a href="jitsi meet guide.pdf">jitsi meetの使い方</a></li>
+                <li class="guide-li"><a href="jitsi_meet_guide.pdf">jitsi meetの使い方</a></li>
                 <li class="guide-li"><a href="VB2.html">VirtualBox環境の使い方</a></li>
                 <li class="guide-li"><a href="FAQ.html">FAQ集</a></li>
                 <li class="guide-li"><a href="zoom.html">Zoom音声トラブルの際はこちら</a></li>