diff --git a/app/views/boards/_course_show.html.erb b/app/views/boards/_course_show.html.erb
index 25d35d407..ca33b7516 100644
--- a/app/views/boards/_course_show.html.erb
+++ b/app/views/boards/_course_show.html.erb
@@ -63,7 +63,9 @@
               <td>
                 <table width="640px" border="0">
                   <tr>
-                    <td valign="top" width="500px" class=" <%= topic.sticky? ? 'sticky' : '' %> <%= topic.locked? ? 'locked' : '' %>"><%= link_to h(topic.subject), board_message_path(@board, topic) %></td>
+                    <td valign="top" width="500px" class=" <%= topic.sticky? ? 'sticky' : '' %>
+                    <%= topic.locked? ? 'locked' : '' %>"><%= link_to h(topic.subject.truncate(40,ommision:'...')), board_message_path(@board, topic),title: topic.subject.to_s %>
+                    </td>
                     <td align="right" rowspan="3"><table class="borad-count"><tr><td align="center" class="borad-count-digit"><%=link_to (topic.replies_count), board_message_path(@board, topic) %></td></tr>
                       <tr><td align="center">回答</td></tr>
                     </table></td>
diff --git a/app/views/boards/_project_show.html.erb b/app/views/boards/_project_show.html.erb
index 1327f13e9..ef1afd27e 100644
--- a/app/views/boards/_project_show.html.erb
+++ b/app/views/boards/_project_show.html.erb
@@ -71,7 +71,9 @@
               <td>
                 <table width="640px" border="0">
                   <tr>
-                    <td valign="top" width="500px" class=" <%= topic.sticky? ? 'sticky' : '' %> <%= topic.locked? ? 'locked' : '' %>"><%= link_to h(topic.subject), board_message_path(@board, topic) %></td>
+                    <td valign="top" width="500px" class=" <%= topic.sticky? ? 'sticky' : '' %>
+                    <%= topic.locked? ? 'locked' : '' %>"><%= link_to h(topic.subject.truncate(40,ommision:'...')), board_message_path(@board, topic),title:topic.subject.to_s %>
+                    </td>
                     <td align="right" rowspan="3">
                       <table class="borad-count">
                         <tr>