diff --git a/db/update18.4.sql b/db/update18.4.sql
index 1cb8f5d910..c9e207cb16 100644
--- a/db/update18.4.sql
+++ b/db/update18.4.sql
@@ -19,7 +19,7 @@ INSERT INTO zt_privlang (objectID, objectType, lang, `key`, value, `desc`) VALUE
 INSERT INTO zt_privrelation (priv, `type`, relationPriv) VALUES(2108, 'depend', 1648);
 INSERT INTO zt_privrelation (priv, `type`, relationPriv) VALUES(2108, 'depend', 1651);
 
-ALTER TABLE `zt_traincourse` ADD `importedStatus` enum('wait','doing','done') NOT NULL DEFAULT 'wait' AFTER `desc`;
+ALTER TABLE `zt_traincourse` ADD `importedStatus` enum('','wait','doing','done') NOT NULL DEFAULT '' AFTER `desc`;
 ALTER TABLE `zt_traincourse` ADD `lastUpdatedTime` int UNSIGNED NOT NULL DEFAULT 0 AFTER `importedStatus`;
 ALTER TABLE `zt_traincourse` MODIFY COLUMN `code` varchar(255) DEFAULT '' NOT NULL;
 
diff --git a/db/zentao.sql b/db/zentao.sql
index b831be4f8a..a9d6e82fbb 100755
--- a/db/zentao.sql
+++ b/db/zentao.sql
@@ -3079,7 +3079,7 @@ CREATE TABLE IF NOT EXISTS `zt_traincourse` (
   `status` varchar(10) NOT NULL DEFAULT '',
   `teacher` varchar(30) NOT NULL default '',
   `desc` mediumtext NULL,
-  `importedStatus` enum('wait','doing','done') NOT NULL DEFAULT 'wait',
+  `importedStatus` enum('','wait','doing','done') NOT NULL DEFAULT '',
   `lastUpdatedTime` int UNSIGNED NOT NULL DEFAULT 0,
   `createdBy` varchar(255) NOT NULL DEFAULT '',
   `createdDate` date NULL,