diff --git a/db/zentao.sql b/db/zentao.sql
index f05af49355..316a29b0fd 100644
--- a/db/zentao.sql
+++ b/db/zentao.sql
@@ -935,7 +935,6 @@ CREATE TABLE IF NOT EXISTS `zt_testtask` (
   `program` mediumint(8) unsigned NOT NULL,
   `product` mediumint(8) unsigned NOT NULL,
   `name` char(90) NOT NULL,
-  `product` mediumint(8) unsigned NOT NULL,
   `project` mediumint(8) unsigned NOT NULL default '0',
   `build` char(30) NOT NULL,
   `owner` varchar(30) NOT NULL,