diff --git a/htdocs/install/mysql/migration/8.0.0-9.0.0.sql b/htdocs/install/mysql/migration/8.0.0-9.0.0.sql
index f67839073f0..81df41d55e0 100644
--- a/htdocs/install/mysql/migration/8.0.0-9.0.0.sql
+++ b/htdocs/install/mysql/migration/8.0.0-9.0.0.sql
@@ -29,7 +29,11 @@
 
 
 -- Missing in 8.0 ?
+ALTER TABLE llx_accounting_account DROP FOREIGN KEY fk_accounting_account_fk_pcg_version;
 ALTER TABLE llx_accounting_account MODIFY COLUMN fk_pcg_version varchar(32) NOT NULL;
+ALTER TABLE llx_accounting_system MODIFY COLUMN pcg_version varchar(32) NOT NULL;
+ALTER TABLE llx_accounting_account ADD CONSTRAINT fk_accounting_account_fk_pcg_version    FOREIGN KEY (fk_pcg_version)    REFERENCES llx_accounting_system (pcg_version);
+
 ALTER TABLE llx_accounting_account MODIFY COLUMN account_number varchar(32) NOT NULL;
 
 -- For 9.0