diff --git a/src/Symfony/Bridge/Doctrine/Form/ChoiceList/ORMQueryBuilderLoader.php b/src/Symfony/Bridge/Doctrine/Form/ChoiceList/ORMQueryBuilderLoader.php
index 875b08dae95e..9c1f779e5fca 100644
--- a/src/Symfony/Bridge/Doctrine/Form/ChoiceList/ORMQueryBuilderLoader.php
+++ b/src/Symfony/Bridge/Doctrine/Form/ChoiceList/ORMQueryBuilderLoader.php
@@ -62,7 +62,7 @@ public function getEntitiesByIds($identifier, array $values)
             $metadata = $this->queryBuilder->getEntityManager()->getClassMetadata(current($this->queryBuilder->getRootEntities()));
 
             foreach ($this->getEntities() as $entity) {
-                if (\in_array(current($metadata->getIdentifierValues($entity)), $values, true)) {
+                if (\in_array((string) current($metadata->getIdentifierValues($entity)), $values, true)) {
                     $choices[] = $entity;
                 }
             }
diff --git a/src/Symfony/Bridge/Doctrine/Tests/Form/Type/EntityTypeTest.php b/src/Symfony/Bridge/Doctrine/Tests/Form/Type/EntityTypeTest.php
index bc12de5d427e..7bb57d707ddd 100644
--- a/src/Symfony/Bridge/Doctrine/Tests/Form/Type/EntityTypeTest.php
+++ b/src/Symfony/Bridge/Doctrine/Tests/Form/Type/EntityTypeTest.php
@@ -956,7 +956,32 @@ public function testDisallowChoicesThatAreNotIncludedQueryBuilderSingleIdentifie
         $this->assertNull($field->getData());
     }
 
-    public function testDisallowChoicesThatAreNotIncludedQueryBuilderSingleIdentifierWithLimit()
+    public function testSingleIdentifierWithLimit()
+    {
+        $entity1 = new SingleIntIdEntity(1, 'Foo');
+        $entity2 = new SingleIntIdEntity(2, 'Bar');
+        $entity3 = new SingleIntIdEntity(3, 'Baz');
+
+        $this->persist([$entity1, $entity2, $entity3]);
+
+        $repository = $this->em->getRepository(self::SINGLE_IDENT_CLASS);
+
+        $field = $this->factory->createNamed('name', static::TESTED_TYPE, null, [
+            'em' => 'default',
+            'class' => self::SINGLE_IDENT_CLASS,
+            'query_builder' => $repository->createQueryBuilder('e')
+                ->where('e.id IN (1, 2, 3)')
+                ->setMaxResults(1),
+            'choice_label' => 'name',
+        ]);
+
+        $field->submit('1');
+
+        $this->assertTrue($field->isSynchronized());
+        $this->assertSame($entity1, $field->getData());
+    }
+
+    public function testDisallowChoicesThatAreNotIncludedByQueryBuilderSingleIdentifierWithLimit()
     {
         $entity1 = new SingleIntIdEntity(1, 'Foo');
         $entity2 = new SingleIntIdEntity(2, 'Bar');