diff --git a/app/views/memos/show.html.erb b/app/views/memos/show.html.erb
index 435fd0f9e..d684b4297 100644
--- a/app/views/memos/show.html.erb
+++ b/app/views/memos/show.html.erb
@@ -90,7 +90,7 @@
       </div>
       <div class="homepagePostReplyDes">
         <div class="homepagePostReplyPublisher"><a href="<%=user_path(reply.author)%>" class="newsBlue mr10 f14"><%= reply.author.name%></a><%=  format_date(reply.created_at) %></div>
-        <div class="homepagePostReplyContent" id="activity_description_<%= reply.id %>"><%= h reply.content.html_safe%></div>
+        <div class="homepagePostReplyContent break_word"  id="activity_description_<%= reply.id %>"><%= h reply.content.html_safe%></div>
       </div>
       <script type="text/javascript">
           $(function(){