diff --git a/app/views/courses/show.html.erb b/app/views/courses/show.html.erb
index 0feca0d1b..63285a2cd 100644
--- a/app/views/courses/show.html.erb
+++ b/app/views/courses/show.html.erb
@@ -35,7 +35,7 @@
                             :class => "problem_tit c_dblue fl fb",'data-type'=>e.event_type,
                             'data-notify-id'=>(e.respond_to?('get_notify_id') ? e.get_notify_id : ''),:nhname=>"nh_act_link",
                             'data-href'=>(course_activity_notifys_path(@course)+"/chang_read_flag?an_id="+(e.respond_to?('get_notify_id') ? e.get_notify_id : '').to_s)%>
-                <%if @controller_name=='ActivityNotifys' && !e.get_notify_is_read%>
+                <%if @controller_name=='ActivityNotifys' && e.get_notify_is_read!=1%>
                 <span nhname="nh_act_flag" class="ml10 fl"><img src="/images/new.png" width="35" height="15"/></span>
                 <%end%>
                 <br />