diff --git a/workflow/engine/data/mysql/schema.sql b/workflow/engine/data/mysql/schema.sql
index c6dbd4a07..29afe4065 100755
--- a/workflow/engine/data/mysql/schema.sql
+++ b/workflow/engine/data/mysql/schema.sql
@@ -212,7 +212,7 @@ CREATE TABLE `DYNAFORM`
 	`DYN_CONTENT` MEDIUMTEXT,
 	`DYN_LABEL` MEDIUMTEXT,
 	`DYN_VERSION` INTEGER  NOT NULL,
-	`DYN_UPDATE_DATE` DATETIME  default '' NOT NULL,
+	`DYN_UPDATE_DATE` DATETIME NOT NULL,
 	PRIMARY KEY (`DYN_UID`)
 )ENGINE=InnoDB  DEFAULT CHARSET='utf8' COMMENT='Forms required';
 #-----------------------------------------------------------------------------