diff --git a/lib/Doctrine/ORM/PersistentCollection.php b/lib/Doctrine/ORM/PersistentCollection.php
index 9840bead2..b64cacfdc 100644
--- a/lib/Doctrine/ORM/PersistentCollection.php
+++ b/lib/Doctrine/ORM/PersistentCollection.php
@@ -672,7 +672,10 @@ final class PersistentCollection implements Collection
      */
     public function slice($offset, $length = null)
     {
-        if (!$this->initialized && $this->association['fetch'] == Mapping\ClassMetadataInfo::FETCH_EXTRA_LAZY) {
+        if ( ! $this->initialized &&
+             ! $this->isDirty &&
+               $this->association['fetch'] == Mapping\ClassMetadataInfo::FETCH_EXTRA_LAZY) {
+
             return $this->em->getUnitOfWork()
                             ->getCollectionPersister($this->association)
                             ->slice($this, $offset, $length);
diff --git a/tests/Doctrine/Tests/ORM/Functional/ExtraLazyCollectionTest.php b/tests/Doctrine/Tests/ORM/Functional/ExtraLazyCollectionTest.php
index 43b45650f..351c1e25b 100644
--- a/tests/Doctrine/Tests/ORM/Functional/ExtraLazyCollectionTest.php
+++ b/tests/Doctrine/Tests/ORM/Functional/ExtraLazyCollectionTest.php
@@ -326,6 +326,27 @@ class ExtraLazyCollectionTest extends \Doctrine\Tests\OrmFunctionalTestCase
         $this->assertEquals(4, count($user->groups));
     }
 
+    /**
+     * @group DDC-1462
+     */
+    public function testSliceOnDirtyCollection()
+    {
+        $user = $this->_em->find('Doctrine\Tests\Models\CMS\CmsUser', $this->userId);
+        /* @var $user CmsUser */
+
+        $newGroup = new \Doctrine\Tests\Models\CMS\CmsGroup();
+        $newGroup->name = "Test4";
+
+        $user->addGroup($newGroup);
+        $this->_em->persist($newGroup);
+
+        $qc = $this->getCurrentQueryCount();
+        $groups = $user->groups->slice(0, 10);
+
+        $this->assertEquals(4, count($groups));
+        $this->assertEquals($qc + 1, $this->getCurrentQueryCount());
+    }
+
     private function loadFixture()
     {
         $user1 = new \Doctrine\Tests\Models\CMS\CmsUser();