diff --git a/app/serializers/api/admin/units_product_serializer.rb b/app/serializers/api/admin/units_product_serializer.rb
index cb41461c19..60c5f70b97 100644
--- a/app/serializers/api/admin/units_product_serializer.rb
+++ b/app/serializers/api/admin/units_product_serializer.rb
@@ -3,7 +3,7 @@
 module Api
   module Admin
     class UnitsProductSerializer < ActiveModel::Serializer
-      attributes :id, :name, :group_buy_unit_size, :variant_unit
+      attributes :id, :name, :group_buy_unit_size, :variant_unit, :variant_unit_scale
     end
   end
 end