diff --git a/test/integration/clearbit_test.rb b/test/integration/clearbit_test.rb
index be97d4b89..b5060db1e 100644
--- a/test/integration/clearbit_test.rb
+++ b/test/integration/clearbit_test.rb
@@ -1,8 +1,7 @@
 
-require 'integration_test_helper'
+require 'test_helper'
 
 class ClearbitTest < ActiveSupport::TestCase
-  self.use_transactional_tests = true
 
   # check
   test 'base' do
diff --git a/test/integration/monitoring_controller_test.rb b/test/integration/monitoring_controller_test.rb
index 703dc244c..ce648e274 100644
--- a/test/integration/monitoring_controller_test.rb
+++ b/test/integration/monitoring_controller_test.rb
@@ -1,7 +1,7 @@
-require 'test_helper'
+require 'integration_test_helper'
 
 class MonitoringControllerTest < ActionDispatch::IntegrationTest
-  self.use_transactional_tests = false
+
   setup do
 
     # set accept header
@@ -75,8 +75,6 @@ class MonitoringControllerTest < ActionDispatch::IntegrationTest
       roles: roles,
     )
 
-    # ensure fresh state
-    Delayed::Job.destroy_all
   end
 
   test '01 monitoring without token' do
diff --git a/test/integration/object_manager_attributes_controller_test.rb b/test/integration/object_manager_attributes_controller_test.rb
index 5f137b113..498c076b4 100644
--- a/test/integration/object_manager_attributes_controller_test.rb
+++ b/test/integration/object_manager_attributes_controller_test.rb
@@ -1,8 +1,7 @@
-require 'test_helper'
+require 'integration_test_helper'
 require 'rake'
 
 class ObjectManagerAttributesControllerTest < ActionDispatch::IntegrationTest
-  self.use_transactional_tests = false
 
   setup do
 
diff --git a/test/integration/object_manager_test.rb b/test/integration/object_manager_test.rb
index 9a6064668..55a5462d1 100644
--- a/test/integration/object_manager_test.rb
+++ b/test/integration/object_manager_test.rb
@@ -1,7 +1,6 @@
-require 'test_helper'
+require 'integration_test_helper'
 
 class ObjectManagerTest < ActiveSupport::TestCase
-  self.use_transactional_tests = false
 
   test 'a object manager' do
 
diff --git a/test/integration/package_test.rb b/test/integration/package_test.rb
index 26bf7f7f2..8dfd53361 100644
--- a/test/integration/package_test.rb
+++ b/test/integration/package_test.rb
@@ -1,8 +1,7 @@
 
-require 'test_helper'
+require 'integration_test_helper'
 
 class PackageTest < ActiveSupport::TestCase
-  self.use_transactional_tests = false
 
   test 'packages' do
     tests = [
diff --git a/test/integration/zendesk_import_test.rb b/test/integration/zendesk_import_test.rb
index 1b781a9a1..b199b380e 100644
--- a/test/integration/zendesk_import_test.rb
+++ b/test/integration/zendesk_import_test.rb
@@ -3,7 +3,6 @@ require 'integration_test_helper'
 
 class ZendeskImportTest < ActiveSupport::TestCase
   self.test_order = :sorted
-  self.use_transactional_tests = false
 
   if !ENV['IMPORT_ZENDESK_ENDPOINT']
     raise "ERROR: Need IMPORT_ZENDESK_ENDPOINT - hint IMPORT_ZENDESK_ENDPOINT='https://example.zendesk.com/api/v2'"
diff --git a/test/integration_test_helper.rb b/test/integration_test_helper.rb
index ec00050a4..150d75a9f 100644
--- a/test/integration_test_helper.rb
+++ b/test/integration_test_helper.rb
@@ -20,6 +20,9 @@ class ActiveSupport::TestCase
   load Rails.root.join('db', 'seeds.rb')
   load Rails.root.join('test', 'fixtures', 'seeds.rb')
 
+  # set system mode to done / to activate
+  Setting.set('system_init_done', true)
+
   setup do
 
     # clear cache
@@ -31,8 +34,13 @@ class ActiveSupport::TestCase
     # remove all session messages
     Sessions.cleanup
 
+    # remove old delayed jobs
+    Delayed::Job.destroy_all
+
     # set current user
     UserInfo.current_user_id = nil
+
+    travel_back
   end
 
   # Add more helper methods to be used by all tests here...