diff --git a/app/views/admin/p_articles/_p_article.html.haml b/app/views/admin/p_articles/_p_article.html.haml
index 8d4a1ed..32497fc 100644
--- a/app/views/admin/p_articles/_p_article.html.haml
+++ b/app/views/admin/p_articles/_p_article.html.haml
@@ -7,7 +7,8 @@
 
   -tr[:p_grade] = capture do
     %td
-      = p_article.p_grade.grade
+      -if p_article.p_grade
+        = p_article.p_grade.grade
 
   -tr[:color] = capture do
     %td