diff --git a/htdocs/install/mysql/migration/3.5.0-3.6.0.sql b/htdocs/install/mysql/migration/3.5.0-3.6.0.sql
index 176568def37..bc2a62ea929 100644
--- a/htdocs/install/mysql/migration/3.5.0-3.6.0.sql
+++ b/htdocs/install/mysql/migration/3.5.0-3.6.0.sql
@@ -1197,3 +1197,8 @@ create table llx_c_type_resource
 )ENGINE=innodb;
 
 ALTER TABLE llx_c_type_resource ADD UNIQUE INDEX uk_c_type_resource_id (label, code);
+
+-- Fix: Missing instruction not correctly done into 3.5
+-- VPGSQL8.2 ALTER TABLE llx_facture_fourn ALTER fk_mode_reglement DROP NOT NULL;
+-- VPGSQL8.2 ALTER TABLE llx_facture_fourn ALTER fk_cond_reglement DROP NOT NULL;
+