diff --git a/src/Symfony/Bundle/SecurityBundle/Command/InitAclCommand.php b/src/Symfony/Bundle/SecurityBundle/Command/InitAclCommand.php
index 0821b42363..5c14a3b58e 100644
--- a/src/Symfony/Bundle/SecurityBundle/Command/InitAclCommand.php
+++ b/src/Symfony/Bundle/SecurityBundle/Command/InitAclCommand.php
@@ -15,6 +15,7 @@ use Symfony\Bundle\FrameworkBundle\Command\ContainerAwareCommand;
 use Symfony\Component\Security\Acl\Dbal\Schema;
 use Symfony\Component\Console\Input\InputInterface;
 use Symfony\Component\Console\Output\OutputInterface;
+use Doctrine\DBAL\Schema\SchemaException;
 
 /**
  * Installs the tables required by the ACL system
@@ -50,26 +51,19 @@ EOT
      */
     protected function execute(InputInterface $input, OutputInterface $output)
     {
-        $connection = $this->getContainer()->get('security.acl.dbal.connection');
-        $sm = $connection->getSchemaManager();
-        $tableNames = $sm->listTableNames();
-        $tables = array(
-            'class_table_name' => $this->getContainer()->getParameter('security.acl.dbal.class_table_name'),
-            'sid_table_name'   => $this->getContainer()->getParameter('security.acl.dbal.sid_table_name'),
-            'oid_table_name'   => $this->getContainer()->getParameter('security.acl.dbal.oid_table_name'),
-            'oid_ancestors_table_name' => $this->getContainer()->getParameter('security.acl.dbal.oid_ancestors_table_name'),
-            'entry_table_name' => $this->getContainer()->getParameter('security.acl.dbal.entry_table_name'),
-        );
+        $container = $this->getContainer();
 
-        foreach ($tables as $table) {
-            if (in_array($table, $tableNames, true)) {
-                $output->writeln(sprintf('The table "%s" already exists. Aborting.', $table));
+        $connection = $container->get('security.acl.dbal.connection');
+        $schema = $container->get('security.acl.dbal.schema');
 
-                return;
-            }
+        try {
+            $schema->addToSchema($connection->getSchemaManager()->createSchema());
+        } catch (SchemaException $e) {
+            $output->writeln("Aborting: " . $e->getMessage());
+
+            return;
         }
 
-        $schema = new Schema($tables, $sm->createSchemaConfig());
         foreach ($schema->toSql($connection->getDatabasePlatform()) as $sql) {
             $connection->exec($sql);
         }
diff --git a/src/Symfony/Bundle/SecurityBundle/DependencyInjection/MainConfiguration.php b/src/Symfony/Bundle/SecurityBundle/DependencyInjection/MainConfiguration.php
index 5f975628ef..30dd54be57 100644
--- a/src/Symfony/Bundle/SecurityBundle/DependencyInjection/MainConfiguration.php
+++ b/src/Symfony/Bundle/SecurityBundle/DependencyInjection/MainConfiguration.php
@@ -89,7 +89,11 @@ class MainConfiguration implements ConfigurationInterface
             ->children()
                 ->arrayNode('acl')
                     ->children()
-                        ->scalarNode('connection')->setInfo('any name configured in doctrine.dbal section')->end()
+                        ->scalarNode('connection')
+                            ->defaultValue('default')
+                            ->cannotBeEmpty()
+                            ->setInfo('any name configured in doctrine.dbal section')
+                        ->end()
                         ->arrayNode('cache')
                             ->addDefaultsIfNotSet()
                             ->children()
diff --git a/src/Symfony/Bundle/SecurityBundle/DependencyInjection/SecurityExtension.php b/src/Symfony/Bundle/SecurityBundle/DependencyInjection/SecurityExtension.php
index 14f36b1372..0fb4929362 100644
--- a/src/Symfony/Bundle/SecurityBundle/DependencyInjection/SecurityExtension.php
+++ b/src/Symfony/Bundle/SecurityBundle/DependencyInjection/SecurityExtension.php
@@ -133,9 +133,16 @@ class SecurityExtension extends Extension
     {
         $loader->load('security_acl_dbal.xml');
 
-        if (isset($config['connection'])) {
-            $container->setAlias('security.acl.dbal.connection', sprintf('doctrine.dbal.%s_connection', $config['connection']));
-        }
+        $container->setAlias('security.acl.dbal.connection', sprintf('doctrine.dbal.%s_connection', $config['connection']));
+
+        $container
+            ->getDefinition('security.acl.dbal.schema_listener')
+            ->addTag('doctrine.event_listener', array(
+                    'connection' => $config['connection'],
+                    'event'      => 'postGenerateSchema'
+            ))
+        ;
+
         $container->getDefinition('security.acl.cache.doctrine')->addArgument($config['cache']['prefix']);
 
         $container->setParameter('security.acl.dbal.class_table_name', $config['tables']['class']);
diff --git a/src/Symfony/Bundle/SecurityBundle/EventListener/AclSchemaListener.php b/src/Symfony/Bundle/SecurityBundle/EventListener/AclSchemaListener.php
new file mode 100644
index 0000000000..2e8b191676
--- /dev/null
+++ b/src/Symfony/Bundle/SecurityBundle/EventListener/AclSchemaListener.php
@@ -0,0 +1,36 @@
+<?php
+
+/*
+ * This file is part of the Symfony framework.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * This source file is subject to the MIT license that is bundled
+ * with this source code in the file LICENSE.
+ */
+
+namespace Symfony\Bundle\SecurityBundle\EventListener;
+
+use Symfony\Component\DependencyInjection\ContainerInterface;
+use Doctrine\ORM\Tools\Event\GenerateSchemaEventArgs;
+
+/**
+ * Merges ACL schema into the given schema.
+ *
+ * @author Johannes M. Schmitt <schmittjoh@gmail.com>
+ */
+class AclSchemaListener
+{
+    private $container;
+
+    public function __construct(ContainerInterface $container)
+    {
+        $this->container = $container;
+    }
+
+    public function postGenerateSchema(GenerateSchemaEventArgs $args)
+    {
+        $schema = $args->getSchema();
+        $this->container->get('security.acl.dbal.schema')->addToSchema($schema);
+    }
+}
\ No newline at end of file
diff --git a/src/Symfony/Bundle/SecurityBundle/Resources/config/security_acl_dbal.xml b/src/Symfony/Bundle/SecurityBundle/Resources/config/security_acl_dbal.xml
index e1f36cabc3..6a921159b7 100644
--- a/src/Symfony/Bundle/SecurityBundle/Resources/config/security_acl_dbal.xml
+++ b/src/Symfony/Bundle/SecurityBundle/Resources/config/security_acl_dbal.xml
@@ -6,6 +6,8 @@
 
     <parameters>
         <parameter key="security.acl.dbal.provider.class">Symfony\Component\Security\Acl\Dbal\MutableAclProvider</parameter>
+        <parameter key="security.acl.dbal.schema.class">Symfony\Component\Security\Acl\Dbal\Schema</parameter>
+        <parameter key="security.acl.dbal.schema_listener.class">Symfony\Bundle\SecurityBundle\EventListener\AclSchemaListener</parameter>        
     </parameters>
 
     <services>
@@ -24,6 +26,20 @@
             <argument type="service" id="security.acl.cache" on-invalid="null" />
         </service>
 
+        <service id="security.acl.dbal.schema" class="%security.acl.dbal.schema.class%">
+            <argument type="collection">
+                <argument key="class_table_name">%security.acl.dbal.class_table_name%</argument>
+                <argument key="entry_table_name">%security.acl.dbal.entry_table_name%</argument>
+                <argument key="oid_table_name">%security.acl.dbal.oid_table_name%</argument>
+                <argument key="oid_ancestors_table_name">%security.acl.dbal.oid_ancestors_table_name%</argument>
+                <argument key="sid_table_name">%security.acl.dbal.sid_table_name%</argument>
+            </argument>
+            <argument type="service" id="security.acl.dbal.connection" />
+        </service>
+        <service id="security.acl.dbal.schema_listener" class="%security.acl.dbal.schema_listener.class%" public="false">
+            <argument type="service" id="service_container" />
+        </service>
+
         <service id="security.acl.provider" alias="security.acl.dbal.provider" />
 
         <service id="security.acl.cache.doctrine" class="%security.acl.cache.doctrine.class%" public="false">
diff --git a/src/Symfony/Component/Security/Acl/Dbal/Schema.php b/src/Symfony/Component/Security/Acl/Dbal/Schema.php
index 010a51e2ce..97376acac6 100644
--- a/src/Symfony/Component/Security/Acl/Dbal/Schema.php
+++ b/src/Symfony/Component/Security/Acl/Dbal/Schema.php
@@ -13,6 +13,7 @@ namespace Symfony\Component\Security\Acl\Dbal;
 
 use Doctrine\DBAL\Schema\Schema as BaseSchema;
 use Doctrine\DBAL\Schema\SchemaConfig;
+use Doctrine\DBAL\Connection;
 
 /**
  * The schema used for the ACL system.
@@ -26,11 +27,13 @@ final class Schema extends BaseSchema
     /**
      * Constructor
      *
-     * @param array $options the names for tables
-     * @param SchemaConfig $schemaConfig
+     * @param array      $options the names for tables
+     * @param Connection $connection
      */
-    public function __construct(array $options, SchemaConfig $schemaConfig = null)
+    public function __construct(array $options, Connection $connection = null)
     {
+        $schemaConfig = null === $connection ? null : $connection->getSchemaManager()->createSchemaConfig();
+
         parent::__construct(array(), array(), $schemaConfig);
 
         $this->options = $options;
@@ -42,6 +45,22 @@ final class Schema extends BaseSchema
         $this->addEntryTable();
     }
 
+    /**
+     * Merges ACL schema with the given schema.
+     *
+     * @param BaseSchema $schema
+     */
+    public function addToSchema(BaseSchema $schema)
+    {
+        foreach ($this->getTables() as $table) {
+            $schema->_addTable($table);
+        }
+
+        foreach ($this->getSequences() as $sequence) {
+            $schema->_addSequence($sequence);
+        }
+    }
+
     /**
      * Adds the class table to the schema
      */