diff --git a/app/views/layouts/_course_base_info.html.erb b/app/views/layouts/_course_base_info.html.erb
index 1c01ecf53..f661571f6 100644
--- a/app/views/layouts/_course_base_info.html.erb
+++ b/app/views/layouts/_course_base_info.html.erb
@@ -17,7 +17,9 @@
           <ul class="sy_class_setting_text">
             <li><%= link_to @course.is_public == 0 ? "设为公开" : "设为私有", {:controller => 'courses', :action => 'private_or_public', :id => @course},:remote=>true,:confirm=>"您确定要设置为"+(@course.is_public == 0 ? "公开" : "私有")+"吗", :class => "sy_class_option" %></li>
             <li><%= link_to "复制班级", copy_course_course_path(@course.id),:remote=>true, :class => "sy_class_option" %></li>
-            <li><%= link_to "进入课程", syllabus_path(@course.syllabus), :class => "sy_class_option", :target => "_blank" %></li>
+            <% if @course.syllabus %>
+                <li><%= link_to "进入课程", syllabus_path(@course.syllabus), :class => "sy_class_option", :target => "_blank" %></li>
+            <% end %>
           </ul>
         </li>
       </ul>