diff --git a/lib/Doctrine/ORM/Internal/Hydration/ObjectHydrator.php b/lib/Doctrine/ORM/Internal/Hydration/ObjectHydrator.php
index 26f9e163e..50dbbc449 100644
--- a/lib/Doctrine/ORM/Internal/Hydration/ObjectHydrator.php
+++ b/lib/Doctrine/ORM/Internal/Hydration/ObjectHydrator.php
@@ -126,13 +126,12 @@ class ObjectHydrator extends AbstractHydrator
      * @param object $entity The entity to which the collection belongs.
      * @param string $name The name of the field on the entity that holds the collection.
      */
-    private function _initRelatedCollection($entity, $name)
+    private function _initRelatedCollection($entity, $class, $fieldName)
     {
         $oid = spl_object_hash($entity);
-        $class = $this->_ce[get_class($entity)];
-        $relation = $class->associationMappings[$name];
+        $relation = $class->associationMappings[$fieldName];
         
-        $value = $class->reflFields[$name]->getValue($entity);
+        $value = $class->reflFields[$fieldName]->getValue($entity);
         if ($value === null) {
             $value = new ArrayCollection;
         }
@@ -144,18 +143,18 @@ class ObjectHydrator extends AbstractHydrator
                 $value
             );
             $value->setOwner($entity, $relation);
-            $class->reflFields[$name]->setValue($entity, $value);
-            $this->_uow->setOriginalEntityProperty($oid, $name, $value);
-            $this->_initializedCollections[$oid . $name] = $value;
+            $class->reflFields[$fieldName]->setValue($entity, $value);
+            $this->_uow->setOriginalEntityProperty($oid, $fieldName, $value);
+            $this->_initializedCollections[$oid . $fieldName] = $value;
         } else if (isset($this->_hints[Query::HINT_REFRESH])) {
             // Is already PersistentCollection, but REFRESH
             $value->clear();
             $value->setDirty(false);
             $value->setInitialized(true);
-            $this->_initializedCollections[$oid . $name] = $value;
+            $this->_initializedCollections[$oid . $fieldName] = $value;
         } else {
             // Is already PersistentCollection, and DONT REFRESH
-            $this->_existingCollections[$oid . $name] = $value;
+            $this->_existingCollections[$oid . $fieldName] = $value;
         }
         
         return $value;
@@ -266,11 +265,11 @@ class ObjectHydrator extends AbstractHydrator
                     continue;
                 }
 
-                $parentClass = $this->_rsm->aliasMap[$parentAlias];
+                $parentClass = $this->_ce[$this->_rsm->aliasMap[$parentAlias]];
                 $oid = spl_object_hash($parentObject);
                 $relationField = $this->_rsm->relationMap[$dqlAlias];
-                $relation = $this->_ce[$parentClass]->associationMappings[$relationField];
-                $reflField = $this->_ce[$parentClass]->reflFields[$relationField];
+                $relation = $parentClass->associationMappings[$relationField];
+                $reflField = $parentClass->reflFields[$relationField];
                 
                 // Check the type of the relation (many or single-valued)
                 if ( ! $relation->isOneToOne()) {
@@ -280,7 +279,7 @@ class ObjectHydrator extends AbstractHydrator
                         if (isset($this->_initializedCollections[$collKey])) {
                             $reflFieldValue = $this->_initializedCollections[$collKey];
                         } else if ( ! isset($this->_existingCollections[$collKey])) {
-                            $reflFieldValue = $this->_initRelatedCollection($parentObject, $relationField);
+                            $reflFieldValue = $this->_initRelatedCollection($parentObject, $parentClass, $relationField);
                         }
                         
                         $indexExists = isset($this->_identifierMap[$dqlAlias][$id[$dqlAlias]]);
@@ -304,11 +303,11 @@ class ObjectHydrator extends AbstractHydrator
                                     if ($relation->isOwningSide && isset($this->_ce[$entityName]->inverseMappings[$relation->sourceEntityName][$relationField])) {
                                         $inverseFieldName = $this->_ce[$entityName]->inverseMappings[$relation->sourceEntityName][$relationField]->sourceFieldName;
                                         if ( ! isset($this->_initializedCollections[spl_object_hash($element) . $inverseFieldName])) {
-                                            $this->_initRelatedCollection($element, $inverseFieldName);
+                                            $this->_initRelatedCollection($element, $this->_ce[$entityName], $inverseFieldName);
                                         }
                                     } else if ($relation->mappedByFieldName) {
                                         if ( ! isset($this->_initializedCollections[spl_object_hash($element) . $relation->mappedByFieldName])) {
-                                            $this->_initRelatedCollection($element, $relation->mappedByFieldName);
+                                            $this->_initRelatedCollection($element, $this->_ce[$entityName], $relation->mappedByFieldName);
                                         }
                                     }
                                 }
@@ -351,12 +350,12 @@ class ObjectHydrator extends AbstractHydrator
                                     if ($inverseAssoc->isOneToMany()) {
                                         // Only initialize reverse collection if it is not yet initialized.
                                         if ( ! isset($this->_initializedCollections[spl_object_hash($element) . $inverseAssoc->sourceFieldName])) {
-                                            $this->_initRelatedCollection($element, $inverseAssoc->sourceFieldName);
+                                            $this->_initRelatedCollection($element, $targetClass, $inverseAssoc->sourceFieldName);
                                         }
                                     } else {
                                         $targetClass->reflFields[$inverseAssoc->sourceFieldName]->setValue($element, $parentObject);
                                     }
-                                } else if ($this->_ce[$parentClass] === $targetClass && $relation->mappedByFieldName) {
+                                } else if ($parentClass === $targetClass && $relation->mappedByFieldName) {
                                     // Special case: bi-directional self-referencing one-one on the same class
                                     $targetClass->reflFields[$relationField]->setValue($element, $parentObject);
                                 }
diff --git a/tests/Doctrine/Tests/ORM/Functional/Ticket/DDC199Test.php b/tests/Doctrine/Tests/ORM/Functional/Ticket/DDC199Test.php
new file mode 100644
index 000000000..c9e129a03
--- /dev/null
+++ b/tests/Doctrine/Tests/ORM/Functional/Ticket/DDC199Test.php
@@ -0,0 +1,100 @@
+<?php
+
+namespace Doctrine\Tests\ORM\Functional\Ticket;
+
+require_once __DIR__ . '/../../../TestInit.php';
+
+class DDC199Test extends \Doctrine\Tests\OrmFunctionalTestCase
+{
+    protected function setUp()
+    {
+        parent::setUp();
+        $this->_schemaTool->createSchema(array(
+            $this->_em->getClassMetadata(__NAMESPACE__ . '\DDC199ParentClass'),
+            $this->_em->getClassMetadata(__NAMESPACE__ . '\DDC199ChildClass'),
+            $this->_em->getClassMetadata(__NAMESPACE__ . '\DDC199RelatedClass')
+        ));
+    }
+    
+    public function testPolymorphicLoading()
+    {
+        $child = new DDC199ChildClass;
+        $child->parentData = 'parentData';
+        $child->childData = 'childData';
+        $this->_em->persist($child);
+        
+        $related1 = new DDC199RelatedClass;
+        $related1->relatedData = 'related1';
+        $related1->parent = $child;
+        $this->_em->persist($related1);
+        
+        $related2 = new DDC199RelatedClass;
+        $related2->relatedData = 'related2';
+        $related2->parent = $child;
+        $this->_em->persist($related2);
+        
+        $this->_em->flush();
+        $this->_em->clear();
+        
+        $query = $this->_em->createQuery('select e,r from Doctrine\Tests\ORM\Functional\Ticket\DDC199ParentClass e join e.relatedEntities r');
+        $result = $query->getResult();
+        
+        $this->assertEquals(1, count($result));
+        $this->assertTrue($result[0] instanceof DDC199ChildClass);
+        $this->assertTrue($result[0]->relatedEntities->isInitialized());
+        $this->assertEquals(2, $result[0]->relatedEntities->count());
+        $this->assertTrue($result[0]->relatedEntities[0] instanceof DDC199RelatedClass);
+        $this->assertTrue($result[0]->relatedEntities[1] instanceof DDC199RelatedClass);
+    }
+}
+
+
+/**
+ * @Entity @Table(name="ddc199_entities")
+ * @InheritanceType("SINGLE_TABLE")
+ * @DiscriminatorColumn(name="discr", type="string")
+ * @DiscriminatorMap({"parent" = "DDC199ParentClass", "child" = "DDC199ChildClass"})
+ */
+class DDC199ParentClass
+{ 
+    /**
+     * @Id @Column(type="integer") 
+     * @GeneratedValue(strategy="AUTO")
+     */
+    public $id;
+    
+    /**
+     * @Column(type="string")
+     */
+    public $parentData;
+    
+    /**
+     * @OneToMany(targetEntity="DDC199RelatedClass", mappedBy="parent")
+     */
+    public $relatedEntities;
+}
+
+
+/** @Entity */
+class DDC199ChildClass extends DDC199ParentClass
+{
+    /**
+     * @Column(type="string")
+     */
+    public $childData;
+}
+
+/** @Entity @Table(name="ddcxxx_relatedclass") */
+class DDC199RelatedClass
+{
+    /** @Id @Column(type="integer") @GeneratedValue(strategy="AUTO") */
+    public $id;
+    /** @Column(type="string") */
+    public $relatedData;
+    
+    /**
+     * @ManyToOne(targetEntity="DDC199ParentClass")
+     * @JoinColumn(name="parent_id", referencedColumnName="id")
+     */
+    public $parent;
+}
\ No newline at end of file