diff --git a/tests/tine20/Admin/Frontend/TestCase.php b/tests/tine20/Admin/Frontend/TestCase.php
index 29a179c896..07be83ede9 100644
--- a/tests/tine20/Admin/Frontend/TestCase.php
+++ b/tests/tine20/Admin/Frontend/TestCase.php
@@ -20,6 +20,8 @@ abstract class Admin_Frontend_TestCase extends TestCase
      */
     protected $_json;
 
+    protected $objects = [];
+
     /**
      * Sets up the fixture.
      * This method is called before a test is executed.
diff --git a/tests/tine20/Crm/ControllerTest.php b/tests/tine20/Crm/ControllerTest.php
index 77834a939e..8490e46a37 100644
--- a/tests/tine20/Crm/ControllerTest.php
+++ b/tests/tine20/Crm/ControllerTest.php
@@ -168,7 +168,7 @@ protected function setUp(): void
             'summary'              => 'phpunit: crm test task',        
         ));
         
-        $this->objects['note'] = new Tinebase_Model_Note(array(
+        $this->_objects['note'] = new Tinebase_Model_Note(array(
             'note_type_id'      => Tinebase_Model_Note::SYSTEM_NOTE_NAME_NOTE,
             'note'              => 'phpunit test note',    
         ));
@@ -193,7 +193,7 @@ public function testAddLead()
         $translate = Tinebase_Translation::getTranslation('Tinebase');
         
         $lead = $this->_objects['initialLead'];
-        $lead->notes = new Tinebase_Record_RecordSet('Tinebase_Model_Note', array($this->objects['note']));
+        $lead->notes = new Tinebase_Record_RecordSet('Tinebase_Model_Note', array($this->_objects['note']));
         $lead = Crm_Controller_Lead::getInstance()->create($lead);
         // TODO remove this nonsense
         $GLOBALS['Addressbook_ControllerTest']['leadId'] = $lead->getId();
@@ -209,7 +209,7 @@ public function testAddLead()
                 $translatedMessage = $translate->_('created') . ' ' . $translate->_('by') . ' ';
                 $this->assertEquals($translatedMessage.Zend_Registry::get('currentAccount')->accountDisplayName, $note->note);
             } else {
-                $this->assertEquals($this->objects['note']->note, $note->note);
+                $this->assertEquals($this->_objects['note']->note, $note->note);
             }
         }
     }
diff --git a/tests/tine20/Sales/PurchaseInvoiceTest.php b/tests/tine20/Sales/PurchaseInvoiceTest.php
index 7c6858f4c8..921057067b 100644
--- a/tests/tine20/Sales/PurchaseInvoiceTest.php
+++ b/tests/tine20/Sales/PurchaseInvoiceTest.php
@@ -20,6 +20,8 @@ class Sales_PurchaseInvoiceTest extends TestCase
     protected $_json;
 
     protected $_recordsToDelete = array();
+
+    protected $_contactController = null;
     
     /**
      * get paging