diff --git a/sql/000_base_structure.sql b/sql/000_base_structure.sql
index 8749c578..efdfef6f 100644
--- a/sql/000_base_structure.sql
+++ b/sql/000_base_structure.sql
@@ -82,6 +82,7 @@ CREATE TABLE IF NOT EXISTS `pool_worker` (
   `password` char(255) DEFAULT NULL,
   `difficulty` float NOT NULL DEFAULT '0',
   `monitor` tinyint(1) NOT NULL DEFAULT '0',
+  `hashrate` int(11) DEFAULT NULL,
   `difficulty` int(11) NOT NULL DEFAULT '0',
   PRIMARY KEY (`id`),
   UNIQUE KEY `username` (`username`),