diff --git a/htdocs/install/mysql/migration/3.9.0-4.0.0.sql b/htdocs/install/mysql/migration/3.9.0-4.0.0.sql
index 7ce46730aa9b40a21a8498184bc67b584d185acb..094084d684997d5eca70a3782a59c342f8afad48 100644
--- a/htdocs/install/mysql/migration/3.9.0-4.0.0.sql
+++ b/htdocs/install/mysql/migration/3.9.0-4.0.0.sql
@@ -385,5 +385,7 @@ insert into llx_c_action_trigger (code,label,description,elementtype,rang) value
 
 ALTER TABLE llx_product_fournisseur_price ADD supplier_reputation varchar(10) NULL;
 
+ALTER TABLE llx_product ADD COLUMN default_vat_code varchar(10) after cost_price;
+
 -- Delete old deprecated field
 ALTER TABLE llx_product_stock DROP COLUMN pmp;