diff --git a/app/views/managements/evaluate_simple.html.erb b/app/views/managements/evaluate_simple.html.erb
index c01b58bc..6d05aedf 100644
--- a/app/views/managements/evaluate_simple.html.erb
+++ b/app/views/managements/evaluate_simple.html.erb
@@ -36,8 +36,8 @@
           <td><%= record.front_js %></td>
           <td><%= record.test_cases %></td>
           <td><%= format_time record.created_at %></td>
-          <td><%= record.shixun.exec_time %></td>
-          <td><%= record.shixun.identifier %></td>
+          <td><%= record.shixun.try(:exec_time) %></td>
+          <td><%= record.shixun.try(:identifier) %></td>
           <td><%= link_to record.shixun.try(:name), task_path(record.game), :target => "_blank", :title => "#{record.shixun.try(:name)}" %></td>
         </tr>
       <% end %>