diff --git a/Tests/Unit/Core/Model/AbstractFinisherTest.php b/Tests/Unit/Core/Model/AbstractFinisherTest.php
index 41a74a4..b026278 100644
--- a/Tests/Unit/Core/Model/AbstractFinisherTest.php
+++ b/Tests/Unit/Core/Model/AbstractFinisherTest.php
@@ -206,7 +206,7 @@ protected function getAbstractFinisher()
      */
     protected function getFinisherContext()
     {
-        $this->formRuntime = $this->getAccessibleMock(FormRuntime::class, ['dummy'], [], '', false);
+        $this->formRuntime = $this->getAccessibleMock(FormRuntime::class, [], [], '', false);
         return new FinisherContext($this->formRuntime);
     }
 }
diff --git a/Tests/Unit/Core/Model/AbstractFormElementTest.php b/Tests/Unit/Core/Model/AbstractFormElementTest.php
index cbb35ac..a489caf 100644
--- a/Tests/Unit/Core/Model/AbstractFormElementTest.php
+++ b/Tests/Unit/Core/Model/AbstractFormElementTest.php
@@ -182,7 +182,7 @@ public function isRequiredReturnsTrueIfNotEmptyValidatorIsAdded()
      */
     protected function getFormElement(array $constructorArguments)
     {
-        return $this->getMockBuilder(AbstractFormElement::class)->addMethods(['dummy'])->setConstructorArgs($constructorArguments)->getMock();
+        return $this->getMockBuilder(AbstractFormElement::class)->onlyMethods([])->setConstructorArgs($constructorArguments)->getMock();
     }
 
     /**
@@ -193,7 +193,7 @@ protected function getFormElement(array $constructorArguments)
      */
     protected function getFormDefinitionWithProcessingRule($formElementIdentifier)
     {
-        $mockProcessingRule = $this->getAccessibleMock(ProcessingRule::class, ['dummy']);
+        $mockProcessingRule = $this->getAccessibleMock(ProcessingRule::class, []);
         $mockProcessingRule->_set('validator', new ConjunctionValidator());
 
         $formDefinition = $this->getMockBuilder(FormDefinition::class)->onlyMethods(['getProcessingRule'])->setConstructorArgs(['foo'])->getMock();
diff --git a/Tests/Unit/Core/Model/PageTest.php b/Tests/Unit/Core/Model/PageTest.php
index e26a058..6f0892c 100644
--- a/Tests/Unit/Core/Model/PageTest.php
+++ b/Tests/Unit/Core/Model/PageTest.php
@@ -104,9 +104,9 @@ public function getElementsRecursivelyReturnsFirstLevelFormElements()
     {
         $page = new Page('foo');
         /** @var AbstractFormElement|MockObject $element1 */
-        $element1 = $this->getMockBuilder(AbstractFormElement::class)->addMethods(['dummy'])->disableOriginalConstructor()->getMock();
+        $element1 = $this->getMockBuilder(AbstractFormElement::class)->onlyMethods([])->disableOriginalConstructor()->getMock();
         /** @var AbstractFormElement|MockObject $element2 */
-        $element2 = $this->getMockBuilder(AbstractFormElement::class)->addMethods(['dummy'])->disableOriginalConstructor()->getMock();
+        $element2 = $this->getMockBuilder(AbstractFormElement::class)->onlyMethods([])->disableOriginalConstructor()->getMock();
         $page->addElement($element1);
         $page->addElement($element2);
         Assert::assertSame([$element1, $element2], $page->getElementsRecursively());
@@ -118,17 +118,17 @@ public function getElementsRecursivelyReturnsRecursiveFormElementsInCorrectOrder
         $page = new Page('foo');
 
         /** @var AbstractFormElement|MockObject $element1 */
-        $element1 = $this->getMockBuilder(AbstractFormElement::class)->addMethods(['dummy'])->disableOriginalConstructor()->getMock();
+        $element1 = $this->getMockBuilder(AbstractFormElement::class)->onlyMethods([])->disableOriginalConstructor()->getMock();
         /** @var Section|MockObject $element2 */
-        $element2 = $this->getMockBuilder(Section::class)->addMethods(['dummy'])->disableOriginalConstructor()->getMock();
+        $element2 = $this->getMockBuilder(Section::class)->onlyMethods([])->disableOriginalConstructor()->getMock();
         /** @var AbstractFormElement|MockObject $element21 */
-        $element21 = $this->getMockBuilder(AbstractFormElement::class)->addMethods(['dummy'])->disableOriginalConstructor()->getMock();
+        $element21 = $this->getMockBuilder(AbstractFormElement::class)->onlyMethods([])->disableOriginalConstructor()->getMock();
         /** @var AbstractFormElement|MockObject $element22 */
-        $element22 = $this->getMockBuilder(AbstractFormElement::class)->addMethods(['dummy'])->disableOriginalConstructor()->getMock();
+        $element22 = $this->getMockBuilder(AbstractFormElement::class)->onlyMethods([])->disableOriginalConstructor()->getMock();
         $element2->addElement($element21);
         $element2->addElement($element22);
         /** @var AbstractFormElement|MockObject $element3 */
-        $element3 = $this->getMockBuilder(AbstractFormElement::class)->addMethods(['dummy'])->disableOriginalConstructor()->getMock();
+        $element3 = $this->getMockBuilder(AbstractFormElement::class)->onlyMethods([])->disableOriginalConstructor()->getMock();
 
         $page->addElement($element1);
         $page->addElement($element2);
@@ -142,7 +142,7 @@ public function aFormElementCanOnlyBeAttachedToASinglePage()
         $this->expectException(FormDefinitionConsistencyException::class);
 
         /** @var AbstractFormElement|MockObject $element */
-        $element = $this->getMockBuilder(AbstractFormElement::class)->addMethods(['dummy'])->disableOriginalConstructor()->getMock();
+        $element = $this->getMockBuilder(AbstractFormElement::class)->onlyMethods([])->disableOriginalConstructor()->getMock();
 
         $page1 = new Page('bar1');
         $page2 = new Page('bar2');
@@ -156,7 +156,7 @@ public function addElementAddsElementAndSetsBackReferenceToPage()
     {
         $page = new Page('bar');
         /** @var AbstractFormElement|MockObject $element */
-        $element = $this->getMockBuilder(AbstractFormElement::class)->addMethods(['dummy'])->disableOriginalConstructor()->getMock();
+        $element = $this->getMockBuilder(AbstractFormElement::class)->onlyMethods([])->disableOriginalConstructor()->getMock();
         $page->addElement($element);
         Assert::assertSame([$element], $page->getElements());
         Assert::assertSame($page, $element->getParentRenderable());
@@ -306,7 +306,7 @@ public function removeElementThrowsExceptionIfElementIsNotOnCurrentPage()
         $formDefinition = $this->getDummyFormDefinition();
         $page1 = $formDefinition->createPage('myPage1');
         /** @var AbstractFormElement|MockObject $element1 */
-        $element1 = $this->getMockBuilder(AbstractFormElement::class)->addMethods(['dummy'])->disableOriginalConstructor()->getMock();
+        $element1 = $this->getMockBuilder(AbstractFormElement::class)->onlyMethods([])->disableOriginalConstructor()->getMock();
 
         $page1->removeElement($element1);
     }
@@ -316,7 +316,7 @@ public function validatorKeyCorrectlyAddsValidator()
     {
         $formDefinition = $this->getDummyFormDefinition();
 
-        $mockProcessingRule = $this->getAccessibleMock(ProcessingRule::class, ['dummy']);
+        $mockProcessingRule = $this->getAccessibleMock(ProcessingRule::class, []);
         /** @noinspection PhpUndefinedMethodInspection */
         $mockProcessingRule->_set('validator', new ConjunctionValidator());
         $formDefinition->expects($this->any())->method('getProcessingRule')->with('asdf')->willReturn($mockProcessingRule);
diff --git a/Tests/Unit/Core/Model/ProcessingRuleTest.php b/Tests/Unit/Core/Model/ProcessingRuleTest.php
index fb7c6e7..f4518c0 100644
--- a/Tests/Unit/Core/Model/ProcessingRuleTest.php
+++ b/Tests/Unit/Core/Model/ProcessingRuleTest.php
@@ -73,10 +73,10 @@ public function getValidatorsReturnsAnEmptyCollectionByDefault()
     public function getValidatorsReturnsPreviouslyAddedValidators()
     {
         /** @var ValidatorInterface $mockValidator1 */
-        $mockValidator1 = $this->createMock(ValidatorInterface::class);
+        $mockValidator1 = $this->createStub(ValidatorInterface::class);
         $this->processingRule->addValidator($mockValidator1);
         /** @var ValidatorInterface $mockValidator2 */
-        $mockValidator2 = $this->createMock(ValidatorInterface::class);
+        $mockValidator2 = $this->createStub(ValidatorInterface::class);
         $this->processingRule->addValidator($mockValidator2);
 
         $validators = $this->processingRule->getValidators();
diff --git a/Tests/Unit/Core/Renderer/FormRuntimeTest.php b/Tests/Unit/Core/Renderer/FormRuntimeTest.php
index 5a5f6f8..b7b6649 100644
--- a/Tests/Unit/Core/Renderer/FormRuntimeTest.php
+++ b/Tests/Unit/Core/Renderer/FormRuntimeTest.php
@@ -45,7 +45,7 @@ public function valuesSetInConstructorCanBeReadAgain()
         $mockActionRequest->expects(self::once())->method('createSubRequest')->willReturn($mockFormSubRequest);
         $actionResponse = new ActionResponse();
 
-        $formRuntime = $this->getAccessibleMock(FormRuntime::class, ['dummy'], [$formDefinition, $mockActionRequest, $actionResponse]);
+        $formRuntime = $this->getAccessibleMock(FormRuntime::class, [], [$formDefinition, $mockActionRequest, $actionResponse]);
 
         Assert::assertSame($mockActionRequest, $formRuntime->getRequest()->getParentRequest());
         Assert::assertInstanceOf(ActionResponse::class, $formRuntime->getResponse());
@@ -204,6 +204,6 @@ protected function createFormRuntime(FormDefinition $formDefinition)
         $mockActionRequest = $this->getMockBuilder(ActionRequest::class)->disableOriginalConstructor()->getMock();
         $actionResponse = new ActionResponse();
 
-        return $this->getAccessibleMock(FormRuntime::class, ['dummy'], [$formDefinition, $mockActionRequest, $actionResponse]);
+        return $this->getAccessibleMock(FormRuntime::class, [], [$formDefinition, $mockActionRequest, $actionResponse]);
     }
 }