diff --git a/apps/tag/serializers.py b/apps/tag/serializers.py
index 8c994d8d..6ee55c84 100644
--- a/apps/tag/serializers.py
+++ b/apps/tag/serializers.py
@@ -83,12 +83,15 @@ class TagBindObjectSerializer(serializers.Serializer):
     object_id = serializers.IntegerField()
 
     def validate(self, attrs):
+        view = self.context.get('view')
+        request = self.context.get('request')
+
         obj_type = attrs.get('type')
         obj_id = attrs.get('object_id')
-        request = self.context.get('request')
-        view = self.context.get('view')
+
         tag = view.get_object()
         attrs['tag'] = tag
+
         if obj_type == self.ESTABLISHMENT:
             establishment = Establishment.objects.filter(pk=obj_id).first()
             if not establishment:
@@ -128,12 +131,14 @@ class TagCategoryBindObjectSerializer(serializers.Serializer):
     object_id = serializers.IntegerField()
 
     def validate(self, attrs):
+        view = self.context.get('view')
+        request = self.context.get('request')
+
         obj_type = attrs.get('type')
         obj_id = attrs.get('object_id')
-        view = self.context.get('view')
+
         tag_category = view.get_object()
         attrs['tag_category'] = tag_category
-        request = self.context.get('request')
 
         if obj_type == self.ESTABLISHMENT_TYPE:
             establishment_type = EstablishmentType.objects.filter(pk=obj_id).\
@@ -148,7 +153,7 @@ class TagCategoryBindObjectSerializer(serializers.Serializer):
                     exists():
                 raise RemovedBindingObjectNotFound()
             attrs['related_object'] = establishment_type
-        elif obj_type == self.NEWS:
+        elif obj_type == self.NEWS_TYPE:
             news_type = NewsType.objects.filter(pk=obj_id).first()
             if not news_type:
                 raise BindingObjectNotFound()