diff --git a/DependencyInjection/Configuration.php b/DependencyInjection/Configuration.php
index 298ba7b..4bb9b6f 100644
--- a/DependencyInjection/Configuration.php
+++ b/DependencyInjection/Configuration.php
@@ -17,8 +17,7 @@ class Configuration implements ConfigurationInterface
      */
     public function getConfigTreeBuilder()
     {
-        $treeBuilder = new TreeBuilder();
-        $rootNode = $treeBuilder->root('serwer_sms_serwer_sms');
+        $treeBuilder = new TreeBuilder('serwer_sms_serwer_sms');
 
         // Here you should define the parameters that are allowed to
         // configure your bundle. See the documentation linked above for
diff --git a/composer.json b/composer.json
index 7e5e8cd..f5a0464 100644
--- a/composer.json
+++ b/composer.json
@@ -2,7 +2,7 @@
     "name" : "serwersms/serwersmsbundle",
     "description" : "This is a Symfony2,3,4 Bundle for communication with the API v2 SerwerSMS.pl",
     "type" : "symfony-bundle",
-	"version": "1.0.3",
+	"version": "1.0.4",
     "authors": [
         {
             "name": "SerwerSMS.pl",