diff --git a/apps/common/serializers/mixin.py b/apps/common/serializers/mixin.py
index 1a749f6d3..d51849f07 100644
--- a/apps/common/serializers/mixin.py
+++ b/apps/common/serializers/mixin.py
@@ -394,7 +394,7 @@ class CommonBulkModelSerializer(CommonBulkSerializerMixin, serializers.ModelSeri
 
 
 class ResourceLabelsMixin(serializers.Serializer):
-    labels = LabelRelatedField(many=True, label=_('Labels'), )
+    labels = LabelRelatedField(many=True, label=_('Labels'), required=False, allow_null=True)
 
     def update(self, instance, validated_data):
         labels = validated_data.pop('labels', None)
diff --git a/apps/labels/serializers.py b/apps/labels/serializers.py
index 476b3c06f..157afc92e 100644
--- a/apps/labels/serializers.py
+++ b/apps/labels/serializers.py
@@ -13,7 +13,7 @@ __all__ = ['LabelSerializer', 'LabeledResourceSerializer', 'ContentTypeResourceS
 class LabelSerializer(BulkOrgResourceModelSerializer):
     class Meta:
         model = Label
-        fields = ['id', 'name', 'value', 'res_count', 'date_created', 'date_updated']
+        fields = ['id', 'name', 'value', 'res_count', 'comment', 'date_created', 'date_updated']
         read_only_fields = ('date_created', 'date_updated', 'res_count')
         extra_kwargs = {
             'res_count': {'label': _('Resource count')},