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 f996ca3677a..5342dd56f7b 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
@@ -463,9 +463,15 @@ ALTER TABLE llx_advtargetemailing ADD UNIQUE INDEX uk_advtargetemailing_name (na
 update llx_product_batch set batch = '000000' where batch = 'Non défini';
 update llx_product_batch set batch = '000000' where batch = 'Non défini';
 update llx_product_batch set batch = '000000' where batch = 'Undefined';
+
+update llx_product_batch set batch = '000000' where batch = '';
+update llx_product_batch set batch = '000000' where batch = '';
+update llx_product_batch set batch = '000000' where batch = '';
+
 update llx_product_lot set batch = '000000' where batch = 'Undefined';
 update llx_stock_mouvement set batch = '000000' where batch = 'Undefined';
 
+
 -- At end (higher risk of error)
 
 -- VMYSQL4.1 ALTER TABLE llx_c_type_resource CHANGE COLUMN rowid rowid integer NOT NULL AUTO_INCREMENT;