diff --git a/db/update18.3.sql b/db/update18.3.sql
index d5f542f68c..444185f83d 100644
--- a/db/update18.3.sql
+++ b/db/update18.3.sql
@@ -352,6 +352,9 @@ ALTER TABLE `zt_basicmeas`
 CHANGE `editedBy` `editedBy` varchar(30) NOT NULL DEFAULT '',
 CHANGE `editedDate` `editedDate` datetime NULL;
 
+ALTER TABLE `zt_block`
+CHANGE `type` `type` char(30) NOT NULL DEFAULT '';
+
 ALTER TABLE `zt_branch`
 CHANGE `closedDate` `closedDate` date NULL;
 
diff --git a/db/zentao.sql b/db/zentao.sql
index 9a5d6239c5..af908d735d 100755
--- a/db/zentao.sql
+++ b/db/zentao.sql
@@ -216,7 +216,7 @@ CREATE TABLE IF NOT EXISTS `zt_block` (
   `account` char(30) NOT NULL,
   `vision` varchar(10) NOT NULL DEFAULT 'rnd',
   `module` varchar(20) NOT NULL,
-  `type` char(30) NOT NULL,
+  `type` char(30) NOT NULL DEFAULT '',
   `title` varchar(100) NOT NULL,
   `source` varchar(20) NOT NULL,
   `block` varchar(30) NOT NULL,