diff --git a/db/update18.0.sql b/db/update18.0.sql
new file mode 100644
index 0000000000..657f5f6ea4
--- /dev/null
+++ b/db/update18.0.sql
@@ -0,0 +1 @@
+ALTER TABLE `zt_ticket` MODIFY `resolution` text NOT NULL;
diff --git a/db/zentao.sql b/db/zentao.sql
index fdd3f3aa31..ec318bc8b5 100755
--- a/db/zentao.sql
+++ b/db/zentao.sql
@@ -7227,7 +7227,7 @@ CREATE TABLE IF NOT EXISTS `zt_ticket` (
   `finishedDate` datetime NOT NULL,
   `resolvedBy` varchar(30) NOT NULL,
   `resolvedDate` datetime NOT NULL,
-  `resolution` varchar(1000) NOT NULL,
+  `resolution` text NOT NULL,
   `editedBy` varchar(30) NOT NULL,
   `editedDate` datetime NOT NULL,
   `keywords` varchar(255) NOT NULL,