diff --git a/sql/000_base_structure.sql b/sql/000_base_structure.sql
index 3c55f36c..63f57241 100644
--- a/sql/000_base_structure.sql
+++ b/sql/000_base_structure.sql
@@ -155,8 +155,8 @@ CREATE TABLE IF NOT EXISTS `shares` (
 ) ENGINE=InnoDB  DEFAULT CHARSET=utf8;
 
 CREATE TABLE IF NOT EXISTS `shares_archive` (
-  `id` int(255) unsigned NOT NULL AUTO_INCREMENT,
-  `share_id` int(255) unsigned NOT NULL,
+  `id` bigint(30) NOT NULL AUTO_INCREMENT,
+  `share_id` bigint(30) NOT NULL,
   `username` varchar(120) NOT NULL,
   `our_result` enum('Y','N') DEFAULT NULL,
   `upstream_result` enum('Y','N') DEFAULT NULL,