diff --git a/tests/Doctrine/Tests/ORM/Hydration/ObjectHydratorTest.php b/tests/Doctrine/Tests/ORM/Hydration/ObjectHydratorTest.php
index 91fffcb6d..8d2b9b226 100644
--- a/tests/Doctrine/Tests/ORM/Hydration/ObjectHydratorTest.php
+++ b/tests/Doctrine/Tests/ORM/Hydration/ObjectHydratorTest.php
@@ -1926,4 +1926,34 @@ class ObjectHydratorTest extends HydrationTestCase
         $hydrator = new \Doctrine\ORM\Internal\Hydration\ObjectHydrator($this->_em);
         $hydrator->hydrateAll($stmt, $rsm);
     }
+
+    /**
+     * @group DDC-3076
+     *
+     * @expectedException \Doctrine\ORM\Internal\Hydration\HydrationException
+     * @expectedExceptionMessage The discriminator value "subworker" is invalid. It must be one of "person", "manager", "employee".
+     */
+    public function testInvalidDiscriminatorValueException()
+    {
+        $rsm = new ResultSetMapping;
+
+        $rsm->addEntityResult('Doctrine\Tests\Models\Company\CompanyPerson', 'p');
+
+        $rsm->addFieldResult('p', 'p__id', 'id');
+        $rsm->addFieldResult('p', 'p__name', 'name');
+        $rsm->addMetaResult('p', 'discr', 'discr');
+        $rsm->setDiscriminatorColumn('p', 'discr');
+
+        $resultSet = array(
+              array(
+                  'p__id'   => '1',
+                  'p__name' => 'Fabio B. Silva',
+                  'discr'   => 'subworker'
+              ),
+         );
+
+        $stmt       = new HydratorMockStatement($resultSet);
+        $hydrator   = new \Doctrine\ORM\Internal\Hydration\ObjectHydrator($this->_em);
+        $hydrator->hydrateAll($stmt, $rsm);
+    }
 }
diff --git a/tests/Doctrine/Tests/ORM/Hydration/SimpleObjectHydratorTest.php b/tests/Doctrine/Tests/ORM/Hydration/SimpleObjectHydratorTest.php
index 44823fa51..459ce9ba1 100644
--- a/tests/Doctrine/Tests/ORM/Hydration/SimpleObjectHydratorTest.php
+++ b/tests/Doctrine/Tests/ORM/Hydration/SimpleObjectHydratorTest.php
@@ -66,15 +66,18 @@ class SimpleObjectHydratorTest extends HydrationTestCase
     public function testInvalidDiscriminatorValueException()
     {
         $rsm = new ResultSetMapping;
+
         $rsm->addEntityResult('Doctrine\Tests\Models\Company\CompanyPerson', 'p');
+
         $rsm->addFieldResult('p', 'p__id', 'id');
         $rsm->addFieldResult('p', 'p__name', 'name');
-        $rsm->addMetaResult('p ', 'discr', 'discr');
+        $rsm->addMetaResult('p', 'discr', 'discr');
         $rsm->setDiscriminatorColumn('p', 'discr');
+
         $resultSet = array(
               array(
-                  'u__id'   => '1',
-                  'u__name' => 'Fabio B. Silva',
+                  'p__id'   => '1',
+                  'p__name' => 'Fabio B. Silva',
                   'discr'   => 'subworker'
               ),
          );