diff --git a/sql/000_base_structure.sql b/sql/000_base_structure.sql
index 9166fc21..948fe036 100644
--- a/sql/000_base_structure.sql
+++ b/sql/000_base_structure.sql
@@ -183,9 +183,15 @@ CREATE TABLE IF NOT EXISTS `tokens` (
 CREATE TABLE IF NOT EXISTS `token_types` (
   `id` tinyint(4) unsigned NOT NULL AUTO_INCREMENT,
   `name` varchar(25) NOT NULL,
-  PRIMARY KEY (`id`)
+  PRIMARY KEY (`id`),
+  UNIQUE KEY `name` (`name`)
 ) ENGINE=InnoDB  DEFAULT CHARSET=utf8;
 
+INSERT INTO `token_types` (`id`, `name`) VALUES
+(1, 'password_reset'),
+(2, 'confirm_email'),
+(3, 'invitation');
+
 CREATE TABLE IF NOT EXISTS `transactions` (
   `id` int(255) NOT NULL AUTO_INCREMENT,
   `account_id` int(255) unsigned NOT NULL,