diff --git a/install-new/upgrade/sql/1.5.0.3.sql b/install-new/upgrade/sql/1.5.0.3.sql
index 2caa8222e..9f9fb78d7 100644
--- a/install-new/upgrade/sql/1.5.0.3.sql
+++ b/install-new/upgrade/sql/1.5.0.3.sql
@@ -1,6 +1,8 @@
 SET NAMES 'utf8';
 
-ALTER TABLE PREFIX_theme ADD COLUMN directory varchar(64) NOT NULL;
+ALTER TABLE `PREFIX_theme` ADD COLUMN directory varchar(64) NOT NULL;
+
+UPDATE `PREFIX_theme` SET directory = name;
 
 /* Supply Order modification as of 1.5.0.3 */
 ALTER TABLE `PREFIX_supply_order` DROP INDEX `reference`;