diff --git a/src/Symfony/Component/Form/ChoiceList/ArrayChoiceList.php b/src/Symfony/Component/Form/ChoiceList/ArrayChoiceList.php
index b1e6b3bf06..e979455ef3 100644
--- a/src/Symfony/Component/Form/ChoiceList/ArrayChoiceList.php
+++ b/src/Symfony/Component/Form/ChoiceList/ArrayChoiceList.php
@@ -141,7 +141,7 @@ class ArrayChoiceList implements ChoiceListInterface
         $choices = array();
 
         foreach ($values as $i => $givenValue) {
-            if (isset($this->choices[$givenValue])) {
+            if (array_key_exists($givenValue, $this->choices)) {
                 $choices[$i] = $this->choices[$givenValue];
             }
         }
diff --git a/src/Symfony/Component/Form/Tests/ChoiceList/ArrayChoiceListTest.php b/src/Symfony/Component/Form/Tests/ChoiceList/ArrayChoiceListTest.php
index 03cb7fce57..9ea5f631a1 100644
--- a/src/Symfony/Component/Form/Tests/ChoiceList/ArrayChoiceListTest.php
+++ b/src/Symfony/Component/Form/Tests/ChoiceList/ArrayChoiceListTest.php
@@ -130,4 +130,11 @@ class ArrayChoiceListTest extends AbstractChoiceListTest
         $this->assertSame(array(2 => 'value2'), $choiceList->getValuesForChoices(array(2 => $obj2)));
         $this->assertSame(array(2 => 'value2'), $choiceList->getValuesForChoices(array(2 => (object) array('value' => 'value2'))));
     }
+
+    public function testGetChoicesForValuesWithContainingNull()
+    {
+        $choiceList = new ArrayChoiceList(array('Null' => null));
+
+        $this->assertSame(array(0 => null), $choiceList->getChoicesForValues(array('0')));
+    }
 }