diff --git a/htdocs/install/mysql/migration/12.0.0-13.0.0.sql b/htdocs/install/mysql/migration/12.0.0-13.0.0.sql
index ffce6b110dc..88c17cc0619 100644
--- a/htdocs/install/mysql/migration/12.0.0-13.0.0.sql
+++ b/htdocs/install/mysql/migration/12.0.0-13.0.0.sql
@@ -30,6 +30,9 @@
 
 -- Missing in v12 or lower
 
+ALTER TABLE llx_payment_salary MODIFY COLUMN ref varchar(30) NULL;
+ALTER TABLE llx_payment_various MODIFY COLUMN ref varchar(30) NULL;
+
 ALTER TABLE llx_prelevement_bons ADD COLUMN type varchar(16) DEFAULT 'debit-order';
 
 ALTER TABLE llx_prelevement_facture_demande ADD INDEX idx_prelevement_facture_demande_fk_facture (fk_facture);