diff --git a/src/Symfony/Component/Config/Definition/Builder/EnumNodeDefinition.php b/src/Symfony/Component/Config/Definition/Builder/EnumNodeDefinition.php
index 6f2864e766..1db01def30 100755
--- a/src/Symfony/Component/Config/Definition/Builder/EnumNodeDefinition.php
+++ b/src/Symfony/Component/Config/Definition/Builder/EnumNodeDefinition.php
@@ -23,6 +23,8 @@ class EnumNodeDefinition extends ScalarNodeDefinition
         }
 
         $this->values = $values;
+        
+        return $this;
     }
 
     /**
@@ -38,4 +40,4 @@ class EnumNodeDefinition extends ScalarNodeDefinition
 
         return new EnumNode($this->name, $this->parent, $this->values);
     }
-}
+}
\ No newline at end of file