diff --git a/mysql/migration/1.0.0-1.1.0.sql b/mysql/migration/1.0.0-1.1.0.sql
index 8c042bce0e8..74af82a9789 100644
--- a/mysql/migration/1.0.0-1.1.0.sql
+++ b/mysql/migration/1.0.0-1.1.0.sql
@@ -14,6 +14,7 @@ alter table llx_facturedet add remise_percent real default 0;
 alter table llx_facturedet add remise real default 0;
 alter table llx_facturedet add subprice real default 0;
 
+alter table llx_facturedet modify fk_product NOT NULL default 0;
 
 create table llx_product_fournisseur
 (