diff --git a/src/Symfony/Bridge/Propel1/Form/ChoiceList/ModelChoiceList.php b/src/Symfony/Bridge/Propel1/Form/ChoiceList/ModelChoiceList.php
index 54fe224d31..4176777b37 100644
--- a/src/Symfony/Bridge/Propel1/Form/ChoiceList/ModelChoiceList.php
+++ b/src/Symfony/Bridge/Propel1/Form/ChoiceList/ModelChoiceList.php
@@ -345,7 +345,7 @@ class ModelChoiceList extends ObjectChoiceList
         }
 
         // readonly="true" models do not implement Persistent.
-        if ($model instanceof BaseObject and method_exists($model, 'getPrimaryKey')) {
+        if ($model instanceof BaseObject && method_exists($model, 'getPrimaryKey')) {
             return array($model->getPrimaryKey());
         }