diff --git a/htdocs/install/mysql/migration/16.0.0-17.0.0.sql b/htdocs/install/mysql/migration/16.0.0-17.0.0.sql
index 4ec2e7228b2..a1e24fa6d2c 100644
--- a/htdocs/install/mysql/migration/16.0.0-17.0.0.sql
+++ b/htdocs/install/mysql/migration/16.0.0-17.0.0.sql
@@ -33,8 +33,9 @@
 
 
 -- Missing in v16 or lower
-
+ALTER TABLE llx_accounting_account DROP FOREIGN KEY fk_accounting_account_fk_pcg_version;
 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_c_action_trigger MODIFY elementtype VARCHAR(64);