diff --git a/mysql/migration/2.1.0-2.2.0.sql b/mysql/migration/2.1.0-2.2.0.sql
index 3266247016a..e8ca0fb3ed1 100644
--- a/mysql/migration/2.1.0-2.2.0.sql
+++ b/mysql/migration/2.1.0-2.2.0.sql
@@ -8,6 +8,9 @@
 -- sans AUCUNE erreur ni warning
 --
 
+-- Nettoyage champ ref table llx_bank_account
+update llx_bank_account set ref=concat('ACCOUNT',rowid) where (ref='' or ref is null);
+
 -- Sequence de requete pour nettoyage et correction champ type table llx_bank_url
 update llx_bank_url set type='company'  where (type is null or type = '') and url like '%compta/fiche.php?socid=%';
 alter table llx_bank_url modify `type` enum("","?","company","payment","payment_supplier","member","subscription","donation","sc","payment_sc");