diff --git a/spec/grape_ams_spec.rb b/spec/grape_ams_spec.rb
index d7845fa..c9f90b5 100644
--- a/spec/grape_ams_spec.rb
+++ b/spec/grape_ams_spec.rb
@@ -1,5 +1,6 @@
 require 'spec_helper'
 require 'spec_fakes'
+require "grape-active_model_serializers"
 # require 'active_model'
 
 describe Grape::ActiveModelSerializers do
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index d92f000..93ff130 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -5,11 +5,14 @@ require 'bundler'
 Bundler.setup :default, :test
 
 require 'active_support/core_ext/hash/conversions'
+require 'active_record'
 require 'active_model'
 require "active_model_serializers"
 require "active_support/json"
 require 'rspec'
 require 'rack/test'
+
+ActiveRecord::Base.establish_connection :adapter => :nulldb, :schema  => 'db/schema.rb'
 require 'nulldb_rspec'
 
 include NullDB::RSpec::NullifiedDatabase