diff --git a/DependencyInjection/Configuration.php b/DependencyInjection/Configuration.php
index bfe54a7..24d16a9 100644
--- a/DependencyInjection/Configuration.php
+++ b/DependencyInjection/Configuration.php
@@ -14,14 +14,15 @@ public function getConfigTreeBuilder()
     $rootNode
         ->children()
             ->append($this->addClientNode())
-            ->append($this->addUserNode())
-            ->append($this->addRoleNode())
             ->scalarNode('user_class')
               ->defaultValue("IMAG\LdapBundle\User\LdapUser")
             ->end()
         ->end()
         ;
-
+    
+    $this->addUserNode($rootNode);
+    $this->addRoleNode($rootNode);
+    
     return $treeBuilder;
   }
 
@@ -48,45 +49,48 @@ private function addClientNode()
       return $node;
   }
 
-  private function addUserNode()
+  private function addUserNode(\Symfony\Component\Config\Definition\Builder\ArrayNodeDefinition $rootNode)
   {
-      $treeBuilder = new TreeBuilder();
-      $node = $treeBuilder->root('user');
-
-      $node
-          ->isRequired()
+      $rootNode
+          ->fixXmlConfig('user', 'users')
           ->children()
-              ->scalarNode('base_dn')->isRequired()->cannotBeEmpty()->end()
-              ->scalarNode('filter')->end()
-              ->scalarNode('name_attribute')->defaultValue('uid')->end()
-              ->variableNode('attributes')->defaultValue(array())->end()
+              ->arrayNode('users')
+                  ->isRequired()
+                  ->prototype('array')
+                      ->children()
+                      ->scalarNode('base_dn')->isRequired()->cannotBeEmpty()->end()
+                      ->scalarNode('filter')->end()
+                      ->scalarNode('name_attribute')->defaultValue('uid')->end()
+                      ->variableNode('attributes')->defaultValue(array())->end()
+                  ->end()
+                ->end()
           ->end()
           ;
-
-      return $node;
   }
 
-  private function addRoleNode()
+  private function addRoleNode(\Symfony\Component\Config\Definition\Builder\ArrayNodeDefinition $rootNode)
   {
-      $treeBuilder = new TreeBuilder();
-      $node = $treeBuilder->root('role');
-
-      $node
+      $rootNode
+          ->fixXmlConfig('role', 'roles')
           ->children()
-              ->scalarNode('base_dn')->isRequired()->cannotBeEmpty()->end()
-              ->scalarNode('filter')->end()
-              ->scalarNode('name_attribute')->defaultValue('cn')->end()
-              ->scalarNode('user_attribute')->defaultValue('member')->end()
-              ->scalarNode('user_id')->defaultValue('dn')
-                ->validate()
-                  ->ifNotInArray(array('dn', 'username'))
-                  ->thenInvalid('Only dn or username')
+              ->arrayNode('roles')
+                  ->isRequired()
+                  ->prototype('array')
+                      ->children()
+                      ->scalarNode('base_dn')->isRequired()->cannotBeEmpty()->end()
+                      ->scalarNode('filter')->end()
+                      ->scalarNode('name_attribute')->defaultValue('cn')->end()
+                      ->scalarNode('user_attribute')->defaultValue('member')->end()
+                      ->scalarNode('user_id')->defaultValue('dn')
+                        ->validate()
+                          ->ifNotInArray(array('dn', 'username'))
+                          ->thenInvalid('Only dn or username')
+                        ->end()
+                      ->end()
+                  ->end()
                 ->end()
-              ->end()
           ->end()
           ;
-
-      return $node;
   }
 
 }
diff --git a/Manager/LdapManagerUser.php b/Manager/LdapManagerUser.php
index 9cfef37..78c74a8 100644
--- a/Manager/LdapManagerUser.php
+++ b/Manager/LdapManagerUser.php
@@ -82,11 +82,13 @@ public function getEmail()
     public function getAttributes()
     {
         $attributes = array();
-        foreach ($this->params['user']['attributes'] as $attrName) {
-            if (isset($this->ldapUser[$attrName][0])) {
-                $attributes[$attrName] = $this->ldapUser[$attrName][0];
+		foreach($this->params['users'] as $param) {
+            foreach ($param['attributes'] as $attrName) {
+                if (isset($this->ldapUser[$attrName][0])) {
+                    $attributes[$attrName] = $this->ldapUser[$attrName][0];
+                }
             }
-        }
+		}
 
         return $attributes;
     }
@@ -162,30 +164,40 @@ private function addLdapUser()
         if (!$this->username) {
             throw new \InvalidArgumentException('User is not defined, please use setUsername');
         }
+        
+        $user = null;
+        $count = 0;
+        foreach($this->params['users'] as $param)
+        {
+            $filter = isset($param['filter'])
+                ? $param['filter']
+                : '';
+
+            $entries = $this->ldapConnection
+                ->search(array(
+                    'base_dn' => $param['base_dn'],
+                    'filter' => sprintf('(&%s(%s=%s))',
+                                        $filter,
+                                        $param['name_attribute'],
+                                        $this->ldapConnection->escape($this->username)
+                    )
+                ));
+            
+            $count += $entries['count'];
+            
+            if($entries['count'] === 1)
+                $user = $entries[0];
+        }
 
-        $filter = isset($this->params['user']['filter'])
-            ? $this->params['user']['filter']
-            : '';
-
-        $entries = $this->ldapConnection
-            ->search(array(
-                'base_dn' => $this->params['user']['base_dn'],
-                'filter' => sprintf('(&%s(%s=%s))',
-                                    $filter,
-                                    $this->params['user']['name_attribute'],
-                                    $this->ldapConnection->escape($this->username)
-                )
-            ));
-
-        if ($entries['count'] > 1) {
+        if ($count > 1) {
             throw new \RuntimeException("This search can only return a single user");
         }
 
-        if ($entries['count'] == 0) {
+        if ($count === 0) {
             throw new UsernameNotFoundException(sprintf('Username "%s" doesn\'t exists', $this->username));
         }
 
-        $this->ldapUser = $entries[0];
+        $this->ldapUser = $user;
 
         return $this;
     }
@@ -201,7 +213,7 @@ private function addLdapRoles()
         if (null === $this->ldapUser) {
             throw new \RuntimeException('Cannot assign LDAP roles before authenticating user against LDAP');
         }
-
+        
         $this->ldapUser['roles'] = array();
 
         if (true === $this->params['client']['skip_roles']) {
@@ -210,33 +222,36 @@ private function addLdapRoles()
             return;
         }
 
-        if (!isset($this->params['role']) && false ===  $this->params['client']['skip_roles']) {
+        if (!isset($this->params['roles']) && false ===  $this->params['client']['skip_roles']) {
             throw new \InvalidArgumentException("If you want to skip getting the roles, set config option imag_ldap:client:skip_roles to true");
         }
 
         $tab = array();
-
-        $filter = isset($this->params['role']['filter'])
-            ? $this->params['role']['filter']
-            : '';
-
-        $entries = $this->ldapConnection
-            ->search(array(
-                'base_dn'  => $this->params['role']['base_dn'],
-                'filter'   => sprintf('(&%s(%s=%s))',
-                                      $filter,
-                                      $this->params['role']['user_attribute'],
-                                      $this->ldapConnection->escape($this->getUserId())
-                ),
-                'attrs'    => array(
-                    $this->params['role']['name_attribute']
-                )
-            ));
-
-        for ($i = 0; $i < $entries['count']; $i++) {
-            array_push($tab, sprintf('ROLE_%s',
-                                     self::slugify($entries[$i][$this->params['role']['name_attribute']][0])
-            ));
+        foreach($this->params['roles'] as $param)
+        {
+
+            $filter = isset($param['filter'])
+                ? $param['filter']
+                : '';
+
+            $entries = $this->ldapConnection
+                ->search(array(
+                    'base_dn'  => $param['base_dn'],
+                    'filter'   => sprintf('(&%s(%s=%s))',
+                                          $filter,
+                                          $param['user_attribute'],
+                                          $this->ldapConnection->escape($this->getUserId($param))
+                    ),
+                    'attrs'    => array(
+                        $param['name_attribute']
+                    )
+                ));
+
+            for ($i = 0; $i < $entries['count']; $i++) {
+                array_push($tab, sprintf('ROLE_%s',
+                                         self::slugify($entries[$i][$param['name_attribute']][0])
+                ));
+            }
         }
 
         $this->ldapUser['roles'] = $tab;
@@ -265,9 +280,9 @@ private static function slugify($role)
         return $role;
     }
 
-    private function getUserId()
+    private function getUserId(array $param)
     {
-        switch ($this->params['role']['user_id']) {
+        switch ($param['user_id']) {
         case 'dn':
             return $this->ldapUser['dn'];
             break;
@@ -277,7 +292,7 @@ private function getUserId()
             break;
 
         default:
-            throw new \Exception(sprintf("The value can't be retrieved for this user_id : %s",$this->params['role']['user_id']));
+            throw new \Exception(sprintf("The value can't be retrieved for this user_id : %s", $param['user_id']));
         }
     }
 }
diff --git a/README.md b/README.md
index f71852c..1a5aefe 100644
--- a/README.md
+++ b/README.md
@@ -101,7 +101,14 @@ imag_ldap:
     name_attribute: cn
     user_attribute: member
     user_id: [ dn or username ]
-    
+# Search on several OU for users
+#  users:
+#    - { base_dn: 'ou=people,dc=host,dc=foo', filter: (objectClass=Person), name_attribute: uid }
+#    - { base_dn: 'ou=external people,dc=host,dc=foo', filter: (objectClass=Person), name_attribute: uid }
+# Search on several OU for roles
+#  roles:
+#    - { base_dn: 'ou=group, dc=host, dc=foo', filter: (objectClass=group), name_attribute: cn, user_attribute: member, user_id: dn }
+#    - { base_dn: 'ou=other group, dc=host, dc=foo', filter: (objectClass=group), name_attribute: cn, user_attribute: member, user_id: dn }
 #  user_class: IMAG\LdapBundle\User\LdapUser # Optional
 ```