diff --git a/workflow/engine/config/schema.xml b/workflow/engine/config/schema.xml
index 0110d7fc4..c097c14e8 100755
--- a/workflow/engine/config/schema.xml
+++ b/workflow/engine/config/schema.xml
@@ -360,7 +360,7 @@
         <column name="DEL_INDEX" type="INTEGER" required="true" default="0"/>
         <column name="APP_MSG_TYPE" type="VARCHAR" size="100" required="true" default=""/>
         <column name="APP_MSG_TYPE_ID" type="TINYINT" required="false" default="0"/>
-        <column name="APP_MSG_SUBJECT" type="VARCHAR" size="150" required="true" default=""/>
+        <column name="APP_MSG_SUBJECT" type="VARCHAR" size="998" required="true" default=""/>
         <column name="APP_MSG_FROM" type="VARCHAR" size="100" required="true" default=""/>
         <column name="APP_MSG_TO" type="LONGVARCHAR" required="true"/>
         <column name="APP_MSG_BODY" type="LONGVARCHAR" required="true"/>
diff --git a/workflow/engine/data/mysql/schema.sql b/workflow/engine/data/mysql/schema.sql
index 97732ea0f..2dccb3897 100644
--- a/workflow/engine/data/mysql/schema.sql
+++ b/workflow/engine/data/mysql/schema.sql
@@ -154,7 +154,7 @@ CREATE TABLE `APP_MESSAGE`
 	`DEL_INDEX` INTEGER default 0 NOT NULL,
 	`APP_MSG_TYPE` VARCHAR(100) default '' NOT NULL,
 	`APP_MSG_TYPE_ID` TINYINT default 0,
-	`APP_MSG_SUBJECT` VARCHAR(150) default '' NOT NULL,
+	`APP_MSG_SUBJECT` VARCHAR(998) default '' NOT NULL,
 	`APP_MSG_FROM` VARCHAR(100) default '' NOT NULL,
 	`APP_MSG_TO` MEDIUMTEXT  NOT NULL,
 	`APP_MSG_BODY` MEDIUMTEXT  NOT NULL,