diff --git a/kaminari-core/test/fake_app/active_record/config.rb b/kaminari-core/test/fake_app/active_record/config.rb
deleted file mode 100644
index c78973f..0000000
--- a/kaminari-core/test/fake_app/active_record/config.rb
+++ /dev/null
@@ -1,3 +0,0 @@
-# frozen_string_literal: true
-# database
-ActiveRecord::Base.establish_connection adapter: 'sqlite3', database: 'kaminari_test.sqlite3'
diff --git a/kaminari-core/test/fake_app/config/database.yml b/kaminari-core/test/fake_app/config/database.yml
new file mode 100644
index 0000000..1842421
--- /dev/null
+++ b/kaminari-core/test/fake_app/config/database.yml
@@ -0,0 +1,5 @@
+test:
+  adapter: sqlite3
+  database: kaminari_test.sqlite3
+  pool: 5
+  timeout: 5000
diff --git a/kaminari-core/test/fake_app/rails_app.rb b/kaminari-core/test/fake_app/rails_app.rb
index bedeca7..c8b52be 100644
--- a/kaminari-core/test/fake_app/rails_app.rb
+++ b/kaminari-core/test/fake_app/rails_app.rb
@@ -2,8 +2,8 @@
 # require 'rails/all'
 require 'action_controller/railtie'
 require 'action_view/railtie'
+require 'active_record/railtie' if defined? ActiveRecord
 
-require 'fake_app/active_record/config' if defined? ActiveRecord
 # config
 app = Class.new(Rails::Application)
 app.config.secret_key_base = app.config.secret_token = '3b7cd727ee24e8444053437c36cc66c4'