diff --git a/install-dev/upgrade/sql/1.5.0.13.sql b/install-dev/upgrade/sql/1.5.0.13.sql
index 69c431ffd..2bf4d4004 100644
--- a/install-dev/upgrade/sql/1.5.0.13.sql
+++ b/install-dev/upgrade/sql/1.5.0.13.sql
@@ -1,3 +1,5 @@
 SET NAMES 'utf8';
 
+DROP TABLE `PREFIX_discount`;
+
 /* PHP:add_missing_image_key(); */;