diff --git a/test/php/library/Icinga/Web/FormTest.php b/test/php/library/Icinga/Web/FormTest.php
index 662b1421f2..2494b55c53 100644
--- a/test/php/library/Icinga/Web/FormTest.php
+++ b/test/php/library/Icinga/Web/FormTest.php
@@ -8,6 +8,14 @@
 use Icinga\Web\Request;
 use Icinga\Test\BaseTestCase;
 
+class PostRequest extends Request
+{
+    public function getMethod()
+    {
+        return 'POST';
+    }
+}
+
 class SuccessfulForm extends Form
 {
     public function onSuccess()
@@ -58,6 +66,7 @@ public function testWhetherIsSubmittedReturnsTrueWithASubmitLabelBeingSet()
         $form->setTokenDisabled();
         $form->setSubmitLabel('test');
         $form->populate(array('btn_submit' => true));
+        $form->setRequest(new PostRequest());
 
         $this->assertTrue(
             $form->isSubmitted(),