diff --git a/app/views/api/v1/build_lists/show.json.jbuilder b/app/views/api/v1/build_lists/show.json.jbuilder
index 1d912f07b..327674067 100644
--- a/app/views/api/v1/build_lists/show.json.jbuilder
+++ b/app/views/api/v1/build_lists/show.json.jbuilder
@@ -1,6 +1,6 @@
 json.build_list do |json|
   json.(@build_list, :id, :name, :container_path, :status, :duration)
-  json.(@build_list, :is_circle, :update_type, :priority)
+  json.(@build_list, :is_circle, :update_type, :priority, :new_core)
   json.(@build_list, :advisory, :mass_build)
   json.(@build_list, :auto_publish, :package_version, :commit_hash, :last_published_commit_hash)
   json.build_log_url log_build_list_path(@build_list)
diff --git a/db/migrate/20130119125710_set_default_value_for_new_core.rb b/db/migrate/20130119125710_set_default_value_for_new_core.rb
new file mode 100644
index 000000000..9d92a9376
--- /dev/null
+++ b/db/migrate/20130119125710_set_default_value_for_new_core.rb
@@ -0,0 +1,9 @@
+class SetDefaultValueForNewCore < ActiveRecord::Migration
+  def up
+    change_column :build_lists, :new_core, :boolean, :default => true
+  end
+
+  def down
+    change_column :build_lists, :new_core, :boolean, :default => nil
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index cb5c6635a..81e83254f 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -11,7 +11,7 @@
 #
 # It's strongly recommended to check this file into your version control system.
 
-ActiveRecord::Schema.define(:version => 20130110104600) do
+ActiveRecord::Schema.define(:version => 20130119125710) do
 
   create_table "activity_feeds", :force => true do |t|
     t.integer  "user_id",    :null => false
@@ -131,7 +131,7 @@ ActiveRecord::Schema.define(:version => 20130110104600) do
     t.integer  "mass_build_id"
     t.integer  "save_to_repository_id"
     t.text     "results"
-    t.boolean  "new_core"
+    t.boolean  "new_core",                   :default => true
     t.string   "last_published_commit_hash"
   end
 
diff --git a/spec/factories/build_lists.rb b/spec/factories/build_lists.rb
index 233f19567..fba42d386 100644
--- a/spec/factories/build_lists.rb
+++ b/spec/factories/build_lists.rb
@@ -10,6 +10,7 @@ FactoryGirl.define do
       pr
     }
     association :arch
+    new_core false
     build_for_platform {|bl| bl.save_to_platform}
     save_to_repository {|bl| bl.save_to_platform.repositories.first}
     update_type 'security'