diff --git a/protected/data/database-schema.sql b/protected/data/database-schema.sql
index 982c8f0e..5baa86e0 100644
--- a/protected/data/database-schema.sql
+++ b/protected/data/database-schema.sql
@@ -1,43 +1,43 @@
 SET SQL_MODE="NO_AUTO_VALUE_ON_ZERO";
 SET time_zone = "+00:00";
 
 /*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT */;
 /*!40101 SET @OLD_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS */;
 /*!40101 SET @OLD_COLLATION_CONNECTION=@@COLLATION_CONNECTION */;
 /*!40101 SET NAMES utf8 */;
 
 
 CREATE TABLE IF NOT EXISTS `account_security` (
   `id` int(11) NOT NULL AUTO_INCREMENT,
   `uid` varchar(255) NOT NULL,
   `event_count` int(11) NOT NULL,
   `last_event` int(11) NOT NULL,
   PRIMARY KEY (`id`)
 ) ENGINE=InnoDB  DEFAULT CHARSET=utf8 AUTO_INCREMENT=1 ;
 
 CREATE TABLE IF NOT EXISTS `developer_applications` (
   `id` int(11) NOT NULL AUTO_INCREMENT,
   `status` int(1) NOT NULL,
   `uid` varchar(64) NOT NULL,
   `supporter_uid` varchar(64) NOT NULL,
   `special_reason` tinyint(1) NOT NULL,
   `justification` text NOT NULL,
   `evidence_links` text NOT NULL,
   `ssh_key` text NOT NULL,
   PRIMARY KEY (`id`)
 ) ENGINE=InnoDB  DEFAULT CHARSET=utf8 AUTO_INCREMENT=10 ;
 
 CREATE TABLE IF NOT EXISTS `tokens` (
   `id` int(11) NOT NULL AUTO_INCREMENT,
   `token` varchar(50) NOT NULL,
   `type` int(1) NOT NULL,
-  `mail` varchar(255) NOT NULL,
-  `uid` varchar(255) NOT NULL,
-  `givenName` varchar(255) NOT NULL,
-  `sn` varchar(255) NOT NULL,
+  `mail` varchar(255) NOT NULL DEFAULT '',
+  `uid` varchar(255) NOT NULL DEFAULT '',
+  `givenName` varchar(255) NOT NULL DEFAULT '',
+  `sn` varchar(255) NOT NULL DEFAULT '',
   PRIMARY KEY (`id`)
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8 AUTO_INCREMENT=1 ;
 
 /*!40101 SET CHARACTER_SET_CLIENT=@OLD_CHARACTER_SET_CLIENT */;
 /*!40101 SET CHARACTER_SET_RESULTS=@OLD_CHARACTER_SET_RESULTS */;
 /*!40101 SET COLLATION_CONNECTION=@OLD_COLLATION_CONNECTION */;