diff --git a/DependencyInjection/Configuration.php b/DependencyInjection/Configuration.php
index f7b0e34..7df4882 100644
--- a/DependencyInjection/Configuration.php
+++ b/DependencyInjection/Configuration.php
@@ -111,7 +111,6 @@ class Configuration implements ConfigurationInterface
                         ->useAttributeAsKey('name')
                         ->prototype('array')
                             ->children()
-                                ->scalarNode('driver')->defaultValue('mysql')->end()
                                 ->scalarNode('user')->defaultValue('root')->end()
                                 ->scalarNode('password')->defaultValue('')->end()
                                 ->scalarNode('dsn')->defaultValue('')->end()
@@ -185,7 +184,6 @@ class Configuration implements ConfigurationInterface
                         ->useAttributeAsKey('name')
                         ->prototype('array')
                             ->children()
-                                ->scalarNode('driver')->defaultValue('mysql')->end()
                                 ->scalarNode('user')->defaultValue('root')->end()
                                 ->scalarNode('password')->defaultValue('')->end()
                                 ->scalarNode('dsn')->defaultValue('')->end()