diff --git a/app/views/users/_user_at_message.html.erb b/app/views/users/_user_at_message.html.erb
index dd5ffbe56..343741cd4 100644
--- a/app/views/users/_user_at_message.html.erb
+++ b/app/views/users/_user_at_message.html.erb
@@ -5,9 +5,15 @@
             <span class="newsBlue homepageNewsPublisher"><%= ma.author.login %></span><span class="homepageNewsType fl">提到了你：</span>
           </li>
           <li class="homepageNewsContent fl">
-            <% if ma.at_message_type == "Message" %>
+            <% if ma.at_message_type == "Message" && !ma.at_message.course.nil? %>
                 <%= link_to ma.subject.html_safe, course_boards_path(ma.at_message.course,
-                                                                     :parent_id => ma.at_message.parent_id ? ma.at_message.parent_id : ma.at_message.id, :topic_id => ma.at_message.id),
+                            :parent_id => ma.at_message.parent_id ? ma.at_message.parent_id : ma.at_message.id, :topic_id => ma.at_message.id),
+                            :class =>"#{ma.viewed? ? "newsGrey" : "newsBlack"}",
+                            :onmouseover =>"message_titile_show($(this),event)",
+                            :onmouseout => "message_titile_hide($(this))" %>
+            <% elsif ma.at_message_type == "Message" && !ma.at_message.project.nil? %>
+                <%= link_to ma.subject.html_safe, project_boards_path(ma.at_message.project,
+                            :parent_id => ma.at_message.parent_id ? ma.at_message.parent_id : ma.at_message.id, :topic_id => ma.at_message.id),
                             :class =>"#{ma.viewed? ? "newsGrey" : "newsBlack"}",
                             :onmouseover =>"message_titile_show($(this),event)",
                             :onmouseout => "message_titile_hide($(this))" %>