diff --git a/library/serializers.py b/library/serializers.py
index 1618abd..6133907 100644
--- a/library/serializers.py
+++ b/library/serializers.py
@@ -9,7 +9,7 @@ class ArticleSerializer(serializers.ModelSerializer):
     class Meta:
         model = Article
         exclude = ('css', 'js', 'page', 'head_title', 'public',
-                   'head_description', 'head_image', 'id')
+                   'head_description', 'head_image', 'id',)
 
     @staticmethod
     def get_tags(self):