diff --git a/schedulemay.html b/schedulemay.html
index 653953c..d868e76 100644
--- a/schedulemay.html
+++ b/schedulemay.html
@@ -18,13 +18,13 @@
      <th class="fri">金</th>
      <th class="sat">土</th></tr>
      
-<tr><td class="sun"> </td>
-     <td class="mon"> </td>
-     <td class="tue"> </td>
-     <td class="wed"> </td>
-     <td class="thr"> </td>
-     <td class="fri">1</td>
-     <td class="sat">2</td></tr>
+<tr><th class="sun"> </th>
+     <th class="mon"> </th>
+     <th class="tue"> </th>
+     <th class="wed"> </th>
+     <th class="thr"> </th>
+     <th class="fri">1</th>
+     <th class="sat">2</th></tr>
      
  <tr><th class="sun">3</th>
      <th class="off">4</th>