diff --git a/home/index.html b/home/index.html
index ab71a87..e57b32f 100644
--- a/home/index.html
+++ b/home/index.html
@@ -136,7 +136,7 @@
             <div class="grid"> 
                 <a class="class_content-item scroll" href="../2022-activities/index.html#class28">
                     <div class="item fadein">
-                      <img class="fadein" src="../2022-activities/img/0204-1.jpg" alt="../class_content/index.html">
+                      <img class="fadein" src="../2022-activities/img/0204-1.JPG" alt="../class_content/index.html">
                       <div class="item-content">
                         <p class="item-cat">class content</p>
                       <p class="item-text">2月4日 本講義</p>
@@ -146,7 +146,7 @@
                 </a>
                 <a class="class_content-item scroll" href="../2022-activities/index.html#class26">
                     <div class="item fadein">
-                    <img class="fadein" src="../2022-activities/img/0121-1.JPG" alt="../class_content/index.html">
+                    <img class="fadein" src="../2022-activities/img/0121-1.jpg" alt="../class_content/index.html">
                     <div class="item-content">
                         <p class="item-cat">class content</p>
                         <p class="item-text">1月21日 本講義</p>