diff --git a/src/Symfony/Component/Serializer/Normalizer/AbstractNormalizer.php b/src/Symfony/Component/Serializer/Normalizer/AbstractNormalizer.php
index 0b4f85aa13b89..a2603c86acf54 100644
--- a/src/Symfony/Component/Serializer/Normalizer/AbstractNormalizer.php
+++ b/src/Symfony/Component/Serializer/Normalizer/AbstractNormalizer.php
@@ -355,7 +355,7 @@ protected function instantiateObject(array &$data, $class, array &$context, \Ref
                         }
 
                         $variadicParameters = array_map(
-                            function($parameterData) use ($reflectionClass, $constructorParameter, $paramName, $context, $format) {
+                            function ($parameterData) use ($reflectionClass, $constructorParameter, $paramName, $context, $format) {
                                 return $this->denormalizeParameter($reflectionClass, $constructorParameter, $paramName, $parameterData, $context, $format);
                             },
                             $data[$paramName]