diff --git a/lib/Doctrine/ORM/Internal/Hydration/ObjectHydrator.php b/lib/Doctrine/ORM/Internal/Hydration/ObjectHydrator.php
index cb33a56a6..202fdc7ff 100644
--- a/lib/Doctrine/ORM/Internal/Hydration/ObjectHydrator.php
+++ b/lib/Doctrine/ORM/Internal/Hydration/ObjectHydrator.php
@@ -145,12 +145,12 @@ class ObjectHydrator extends AbstractHydrator
     {
         $oid = spl_object_hash($entity);
         $relation = $class->associationMappings[$fieldName];
-        
+
         $value = $class->reflFields[$fieldName]->getValue($entity);
         if ($value === null) {
             $value = new ArrayCollection;
         }
-        
+
         if ( ! $value instanceof PersistentCollection) {
             $value = new PersistentCollection(
                 $this->_em,
@@ -161,17 +161,19 @@ class ObjectHydrator extends AbstractHydrator
             $class->reflFields[$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
+        } else if (isset($this->_hints[Query::HINT_REFRESH]) ||
+                isset($this->_hints['fetched'][$class->name][$fieldName]) &&
+                ! $value->isInitialized()) {
+            // Is already PersistentCollection, but either REFRESH or FETCH-JOIN and UNINITIALIZED!
             $value->setDirty(false);
             $value->setInitialized(true);
             $value->unwrap()->clear();
             $this->_initializedCollections[$oid . $fieldName] = $value;
         } else {
-            // Is already PersistentCollection, and DONT REFRESH
+            // Is already PersistentCollection, and DON'T REFRESH or FETCH-JOIN!
             $this->_existingCollections[$oid . $fieldName] = $value;
         }
-        
+
         return $value;
     }
     
diff --git a/tests/Doctrine/Tests/ORM/Functional/Ticket/DDC812Test.php b/tests/Doctrine/Tests/ORM/Functional/Ticket/DDC812Test.php
new file mode 100644
index 000000000..3bb0a51fd
--- /dev/null
+++ b/tests/Doctrine/Tests/ORM/Functional/Ticket/DDC812Test.php
@@ -0,0 +1,48 @@
+<?php
+
+namespace Doctrine\Tests\ORM\Functional\Ticket;
+
+use Doctrine\Tests\Models\CMS\CmsArticle;
+use Doctrine\Tests\Models\CMS\CmsComment;
+
+require_once __DIR__ . '/../../../TestInit.php';
+
+class DDC812Test extends \Doctrine\Tests\OrmFunctionalTestCase
+{
+    protected function setUp()
+    {
+        $this->useModelSet('cms');
+        parent::setUp();
+    }
+
+    /**
+     * @group DDC-812
+     */
+    public function testFetchJoinInitializesPreviouslyUninitializedCollectionOfManagedEntity()
+    {
+        //$this->_em->getConnection()->getConfiguration()->setSQLLogger(new \Doctrine\DBAL\Logging\EchoSQLLogger);
+        $article = new CmsArticle;
+        $article->topic = "hello";
+        $article->text = "talk talk talk";
+        
+        $comment = new CmsComment;
+        $comment->topic = "good!";
+        $comment->text = "stuff!";
+        $comment->article = $article;
+        
+        $this->_em->persist($article);
+        $this->_em->persist($comment);
+        $this->_em->flush();
+        $this->_em->clear();
+
+        $article2 = $this->_em->find(get_class($article), $article->id);
+
+        $article2Again = $this->_em->createQuery(
+            "select a, c from Doctrine\Tests\Models\CMS\CmsArticle a join a.comments c where a.id = ?1")
+            ->setParameter(1, $article->id)
+            ->getSingleResult();
+
+        $this->assertTrue($article2Again === $article2);
+        $this->assertTrue($article2Again->comments->isInitialized());
+    }
+}