diff --git a/htdocs/api/index.php b/htdocs/api/index.php
index 2fba9fbb554..f605ff11d85 100644
--- a/htdocs/api/index.php
+++ b/htdocs/api/index.php
@@ -45,7 +45,7 @@ if (!$res) die("Include of main fails");
 
 require_once DOL_DOCUMENT_ROOT.'/includes/restler/framework/Luracast/Restler/AutoLoader.php';
 
-call_user_func(function () {
+call_user_func(function() {
     $loader = Luracast\Restler\AutoLoader::instance();
     spl_autoload_register($loader);
     return $loader;