diff --git a/htdocs/install/mysql/migration/repair.sql b/htdocs/install/mysql/migration/repair.sql
index e656799eb1f..0495171a9d0 100644
--- a/htdocs/install/mysql/migration/repair.sql
+++ b/htdocs/install/mysql/migration/repair.sql
@@ -6,6 +6,11 @@
 
 -- Requests to clean corrupted database
 
+-- delete foreign key that should never exists
+ALTER TABLE llx_propal DROP FOREIGN KEY fk_propal_fk_currency;
+ALTER TABLE llx_commande DROP FOREIGN KEY fk_commande_fk_currency;
+ALTER TABLE llx_facture DROP FOREIGN KEY fk_facture_fk_currency;
+
 delete from llx_facturedet where fk_facture in (select rowid from llx_facture where facnumber in ('(PROV)','ErrorBadMask'));
 delete from llx_facture where facnumber in ('(PROV)','ErrorBadMask');
 delete from llx_commandedet where fk_commande in (select rowid from llx_commande where ref in ('(PROV)','ErrorBadMask'));