diff --git a/mod/data/db/mysql.php b/mod/data/db/mysql.php
index 763a9ed9d3f09..62b9bc1c77510 100644
--- a/mod/data/db/mysql.php
+++ b/mod/data/db/mysql.php
@@ -40,7 +40,7 @@ function data_upgrade($oldversion) {
     }
     
     if ($oldversion < 2006032700) {
-        table_column("data", "", "defaultsort", "integer", "10");
+        table_column("data", "", "defaultsort", "integer", "10", "signed");
         table_column("data", "", "editany", "tinyint", "4");
     }
     
diff --git a/mod/data/db/mysql.sql b/mod/data/db/mysql.sql
index e6f557454450d..40734369d1728 100755
--- a/mod/data/db/mysql.sql
+++ b/mod/data/db/mysql.sql
@@ -36,7 +36,7 @@ CREATE TABLE prefix_data (
   scale int(10) NOT NULL default '0',
   assessed int(10) unsigned NOT NULL default '0',
   assesspublic int(4) unsigned NOT NULL default '0',
-  defaultsort int(10) unsigned NOT NULL default '0',
+  defaultsort int(10) signed NOT NULL default '0',
   editany tinyint(4) unsigned NOT NULL default '0',
   PRIMARY KEY  (id)
 ) TYPE=MyISAM COMMENT='Defines settings for each Database activity';
diff --git a/mod/data/db/postgres7.php b/mod/data/db/postgres7.php
index 2d63aae55f916..dc5cf4fdd0816 100644
--- a/mod/data/db/postgres7.php
+++ b/mod/data/db/postgres7.php
@@ -41,7 +41,7 @@ function data_upgrade($oldversion) {
     }
     
     if ($oldversion < 2006032700) {
-        table_column("data", "", "defaultsort", "integer", "10");
+        table_column("data", "", "defaultsort", "integer", "10", "signed");
         table_column("data", "", "editany", "tinyint", "4");
     }