diff --git a/tests/Doctrine/Tests/ORM/Functional/Ticket/DDC6029Test.php b/tests/Doctrine/Tests/ORM/Functional/Ticket/DDC6029Test.php
index 6002450e3a8..6a87644b458 100644
--- a/tests/Doctrine/Tests/ORM/Functional/Ticket/DDC6029Test.php
+++ b/tests/Doctrine/Tests/ORM/Functional/Ticket/DDC6029Test.php
@@ -3,9 +3,12 @@
 namespace Doctrine\Tests\ORM\Functional\Ticket;
 
 use Doctrine\Common\Collections\ArrayCollection;
-use Doctrine\ORM\Mapping as ORM;
+use Doctrine\ORM\ORMInvalidArgumentException;
 use Doctrine\Tests\OrmFunctionalTestCase;
 
+/**
+ * @group DDC-6029
+ */
 class DDC6029Test extends OrmFunctionalTestCase
 {
     /**
@@ -31,6 +34,9 @@ public function testIssue()
         $user = new DDC6029User();
         $user->addGroup(new DDC6029Group2());
 
+        self::expectException(ORMInvalidArgumentException::class);
+        self::expectExceptionMessage('Expected value of type "Doctrine\Tests\ORM\Functional\Ticket\DDC6029Group" for association field "Doctrine\Tests\ORM\Functional\Ticket\DDC6029User#$groups", got "Doctrine\Tests\ORM\Functional\Ticket\DDC6029Group2" instead.');
+
         $this->_em->persist($user);
         $this->_em->flush();
     }
@@ -42,7 +48,7 @@ class DDC6029User
     /** @Id @Column(type="integer") @GeneratedValue */
     public $id;
 
-    /** @ManyToMany(targetEntity="DDC6029Group", inversedBy="users", cascade={"all"}) */
+    /** @ManyToMany(targetEntity="DDC6029Group", cascade={"all"}) */
     private $groups;
 
     public function __construct() {
@@ -63,16 +69,6 @@ class DDC6029Group implements DDC6029GroupInterface
 {
     /** @Id @Column(type="integer") @GeneratedValue */
     public $id;
-
-    /**
-     * @ManyToMany(targetEntity="DDC6029User", mappedBy="groups")
-     */
-    private $users;
-
-    public function __construct()
-    {
-        $this->users = new ArrayCollection();
-    }
 }
 
 /** @Entity */