diff --git a/db/update18.3.sql b/db/update18.3.sql
index 53fd4ca25c..d5f542f68c 100644
--- a/db/update18.3.sql
+++ b/db/update18.3.sql
@@ -639,6 +639,13 @@ CHANGE `activateDate` `activateDate` date NULL,
 CHANGE `editedBy` `editedBy` varchar(30) NOT NULL DEFAULT '',
 CHANGE `editedDate` `editedDate` datetime NULL;
 
+ALTER TABLE `zt_notify`
+CHANGE `objectID` `objectID` mediumint unsigned NOT NULL DEFAULT '0',
+CHANGE `ccList` `ccList` text NULL,
+CHANGE `subject` `subject` varchar(255) NOT NULL DEFAULT '',
+CHANGE `sendTime` `sendTime` datetime NULL,
+CHANGE `failReason` `failReason` text NULL;
+
 ALTER TABLE `zt_opportunity`
 CHANGE `assignedTo` `assignedTo` varchar(30) NOT NULL DEFAULT '',
 CHANGE `assignedDate` `assignedDate` date NULL,
diff --git a/db/zentao.sql b/db/zentao.sql
index 017e361eff..9a5d6239c5 100755
--- a/db/zentao.sql
+++ b/db/zentao.sql
@@ -1159,17 +1159,17 @@ CREATE TABLE IF NOT EXISTS `zt_mrapproval` (
 CREATE TABLE IF NOT EXISTS `zt_notify` (
   `id` mediumint unsigned NOT NULL AUTO_INCREMENT,
   `objectType` varchar(50) NOT NULL,
-  `objectID` mediumint unsigned NOT NULL,
+  `objectID` mediumint unsigned NOT NULL DEFAULT '0',
   `action` mediumint NOT NULL,
   `toList` varchar(255) NOT NULL,
-  `ccList` text NOT NULL,
-  `subject` varchar(255) NOT NULL,
+  `ccList` text NULL,
+  `subject` varchar(255) NOT NULL DEFAULT '',
   `data` text NOT NULL,
   `createdBy` char(30) NOT NULL,
   `createdDate` datetime NOT NULL,
-  `sendTime` datetime NOT NULL,
+  `sendTime` datetime NULL,
   `status` varchar(10) NOT NULL DEFAULT 'wait',
-  `failReason` text NOT NULL,
+  `failReason` text NULL,
   PRIMARY KEY (`id`),
   KEY `objectType_toList_status` (`objectType`,`toList`,`status`)
 ) ENGINE='InnoDB' COLLATE 'utf8_general_ci';