diff --git a/DependencyInjection/Configuration.php b/DependencyInjection/Configuration.php
index 87ade3c8..7c6123ac 100644
--- a/DependencyInjection/Configuration.php
+++ b/DependencyInjection/Configuration.php
@@ -412,7 +412,7 @@ public function getConfigTreeBuilder()
                                     ->scalarNode('id')->end()
                                     ->scalarNode('host')->end()
                                     ->scalarNode('port')->defaultValue(9200)->end()
-                                    ->scalarNode('transport')->defaultValue('http')->end()
+                                    ->scalarNode('transport')->defaultValue('Http')->end()
                                     ->scalarNode('user')->defaultNull()->end()
                                     ->scalarNode('password')->defaultNull()->end()
                                 ->end()