diff --git a/mysql/tables/llx_product.sql b/mysql/tables/llx_product.sql
index 4f3aa5ab82f..1ae52a9c317 100644
--- a/mysql/tables/llx_product.sql
+++ b/mysql/tables/llx_product.sql
@@ -41,7 +41,7 @@ create table llx_product
   seuil_stock_alerte integer DEFAULT 0,
   gencode            varchar(255) DEFAULT NULL,
   weight             float DEFAULT 0,
-  units              char(2) DEFAULT 'kg',
+  units              tinyint DEFAULT 0,
   canvas             varchar(15) DEFAULT ''
 )type=innodb;