diff --git a/lib/Doctrine/ORM/UnitOfWork.php b/lib/Doctrine/ORM/UnitOfWork.php
index c5c690e1c..2f064e975 100644
--- a/lib/Doctrine/ORM/UnitOfWork.php
+++ b/lib/Doctrine/ORM/UnitOfWork.php
@@ -1473,11 +1473,17 @@ class UnitOfWork implements PropertyChangedListener
                             if ($this->getEntityState($other, self::STATE_DETACHED) == self::STATE_MANAGED) {
                                 $prop->setValue($managedCopy, $other);
                             } else {
+
                                 $targetClass = $this->em->getClassMetadata($assoc2['targetEntity']);
-                                $id = $targetClass->getIdentifierValues($other);
-                                $proxy = $this->em->getProxyFactory()->getProxy($assoc2['targetEntity'], $id);
-                                $prop->setValue($managedCopy, $proxy);
-                                $this->registerManaged($proxy, $id, array());
+                                $relatedId = $targetClass->getIdentifierValues($other);
+
+                                if ($targetClass->subClasses) {
+                                    $entity = $this->em->find($targetClass->name, $relatedId);
+                                } else {
+                                    $proxy = $this->em->getProxyFactory()->getProxy($assoc2['targetEntity'], $relatedId);
+                                    $prop->setValue($managedCopy, $proxy);
+                                    $this->registerManaged($proxy, $relatedId, array());
+                                }
                             }
                         }
                     } else {
diff --git a/tests/Doctrine/Tests/ORM/Functional/Ticket/DDC1383Test.php b/tests/Doctrine/Tests/ORM/Functional/Ticket/DDC1383Test.php
new file mode 100644
index 000000000..6a8cf483a
--- /dev/null
+++ b/tests/Doctrine/Tests/ORM/Functional/Ticket/DDC1383Test.php
@@ -0,0 +1,99 @@
+<?php
+
+namespace Doctrine\Tests\ORM\Functional\Ticket;
+use Doctrine\ORM\UnitOfWork;
+
+require_once __DIR__ . '/../../../TestInit.php';
+
+/**
+ * @group DDC-1383
+ */
+class DDC1383Test extends \Doctrine\Tests\OrmFunctionalTestCase
+{
+    protected function setUp()
+    {
+        parent::setUp();
+		
+        try {
+            $this->_schemaTool->createSchema(array(
+                $this->_em->getClassMetadata(__NAMESPACE__ . '\DDC1383AbstractEntity'),
+                $this->_em->getClassMetadata(__NAMESPACE__ . '\DDC1383Entity'),
+            ));
+        } catch(\Exception $ignored) {}
+    }
+
+    public function testFailingCase()
+    {
+		$parent = new DDC1383Entity();
+		$child = new DDC1383Entity();
+		
+		$child->setReference($parent);
+		
+		$this->_em->persist($parent);
+		$this->_em->persist($child);
+		
+		$id = $child->getId();
+		
+		$this->_em->flush();
+		$this->_em->clear();
+		
+		// Try merging the parent entity
+		$child = $this->_em->merge($child);
+		$parent = $child->getReference();
+		
+		// Parent is not instance of the abstract class
+		self::assertTrue($parent instanceof DDC1383AbstractEntity,
+				"Entity class is " . get_class($parent) . ', "DDC1383AbstractEntity" was expected');
+		
+		// Parent is NOT instance of entity
+		self::assertTrue($parent instanceof DDC1383Entity,
+				"Entity class is " . get_class($parent) . ', "DDC1383Entity" was expected');
+    }
+}
+
+/**
+ * @Entity
+ * @InheritanceType("JOINED")
+ * @DiscriminatorColumn(name="discr", type="integer")
+ * @DiscriminatorMap({1 = "DDC1383Entity"})
+ */
+abstract class DDC1383AbstractEntity
+{
+	/**
+	 * @Id
+	 * @Column(type="integer")
+	 * @GeneratedValue
+	 */
+	protected $id;
+	
+	public function getId()
+	{
+		return $this->id;
+	}
+
+	public function setId($id)
+	{
+		$this->id = $id;
+	}
+}
+
+/**
+ * @Entity
+ */
+class DDC1383Entity extends DDC1383AbstractEntity
+{
+	/**
+	 * @ManyToOne(targetEntity="DDC1383AbstractEntity")
+	 */
+	protected $reference;
+	
+	public function getReference()
+	{
+		return $this->reference;
+	}
+
+	public function setReference(DDC1383AbstractEntity $reference)
+	{
+		$this->reference = $reference;
+	}
+}
\ No newline at end of file