diff --git a/app/views/homework_attach/_comprehensive_evaluation.html.erb b/app/views/homework_attach/_comprehensive_evaluation.html.erb
index df0c03b21..e6ebacffe 100644
--- a/app/views/homework_attach/_comprehensive_evaluation.html.erb
+++ b/app/views/homework_attach/_comprehensive_evaluation.html.erb
@@ -1,13 +1,17 @@
 <% is_teacher = is_course_teacher User.current,homework.bid.courses.first %>
 <% if comprehensive_evaluation != nil && comprehensive_evaluation.count > 0 %>
-    <% stars = homework.rates(:quality).where("rater_id = #{comprehensive_evaluation.first.user.id}").select("stars").first.stars * 2 * 10 %>
+    <% stars = homework.rates(:quality).where("rater_id = #{comprehensive_evaluation.first.user.id}").select("stars").first %>
     <div style="height: 100px; padding-bottom: 10px">
       <div style="font-size: 15px">
         <strong>作业综评：</strong>
         <span class="user" style="font-size: 15px">
           <div data-kls="HomeworkAttach" data-id="2" data-dimension="quality" data-average="3.25" class="rateable div_inline jDisabled"
                style="height: 15px; width: 100px; overflow: hidden; z-index: 1; position: relative;">
-            <div class="jRatingColor" style="width: <%=stars %>%;"></div>
+            <% if stars != nil %>
+                <div class="jRatingColor" style="width: <%=stars.stars * 2 * 10 %>%;"></div>
+            <% else %>
+                <div class="jRatingColor" style="width: 0px;"></div>
+            <% end %>
             <div class="jRatingAverage" style="width: 0px; top: -20px;"></div>
             <div class="jStar" style="width: 115px; height: 20px; top: -40px;
                       background: url('/images/seems_rateable/stars.png') repeat-x scroll 0% 0% transparent;">