diff --git a/DependencyInjection/Configuration.php b/DependencyInjection/Configuration.php
index bfe54a7..50d52f0 100644
--- a/DependencyInjection/Configuration.php
+++ b/DependencyInjection/Configuration.php
@@ -79,8 +79,8 @@ private function addRoleNode()
               ->scalarNode('user_attribute')->defaultValue('member')->end()
               ->scalarNode('user_id')->defaultValue('dn')
                 ->validate()
-                  ->ifNotInArray(array('dn', 'username'))
-                  ->thenInvalid('Only dn or username')
+                  ->ifNotInArray(array('dn', 'username', 'uid'))
+                  ->thenInvalid('Only dn, username or uid')
                 ->end()
               ->end()
           ->end()
diff --git a/Manager/LdapManagerUser.php b/Manager/LdapManagerUser.php
index 6ba8953..5c74eda 100644
--- a/Manager/LdapManagerUser.php
+++ b/Manager/LdapManagerUser.php
@@ -41,14 +41,14 @@ public function auth()
         if (strlen($this->password) === 0) {
             throw new ConnectionException('Password can\'t be empty');
         }
-        
+
         if (null === $this->ldapUser) {
             $this->bindByUsername();
             $this->doPass();
         } else {
             $this->doPass();
             $this->bindByDn();
-        }        
+        }
     }
 
     /**
@@ -276,6 +276,10 @@ private function getUserId()
             return $this->username;
             break;
 
+        case 'uid':
+            return $this->username;
+            break;
+
         default:
             throw new \Exception(sprintf("The value can't be retrieved for this user_id : %s",$this->params['role']['user_id']));
         }