diff --git a/htdocs/install/mysql/migration/9.0.0-10.0.0.sql b/htdocs/install/mysql/migration/9.0.0-10.0.0.sql
index 66839713bb7..43e12c6c05f 100644
--- a/htdocs/install/mysql/migration/9.0.0-10.0.0.sql
+++ b/htdocs/install/mysql/migration/9.0.0-10.0.0.sql
@@ -109,7 +109,7 @@ ALTER TABLE llx_prelevement_facture_demande ADD COLUMN ext_payment_site varchar(
 
 ALTER TABLE llx_c_shipment_mode ADD COLUMN entity integer DEFAULT 1;
 ALTER TABLE llx_c_shipment_mode DROP INDEX uk_c_shipment_mode;
-ALTER TABLE llx_c_shipment_mode ADD UNIQUE INDEX uk_c_shipment_mode (entity, code);
+ALTER TABLE llx_c_shipment_mode ADD UNIQUE INDEX uk_c_shipment_mode (code, entity);
 
 -- Fix if table exists
 ALTER TABLE llx_c_units DROP INDEX uk_c_units_code;