diff --git a/mysql/migration/1.1.0-2.0.0.sql b/mysql/migration/1.1.0-2.0.0.sql
index a55da043998..e8b6f6d476d 100644
--- a/mysql/migration/1.1.0-2.0.0.sql
+++ b/mysql/migration/1.1.0-2.0.0.sql
@@ -39,6 +39,8 @@ ALTER TABLE llx_usergroup_rights ADD FOREIGN KEY (fk_usergroup)    REFERENCES ll
 
 
 alter table llx_facture add  increment           varchar(10);
+alter table llx_facture drop column author;
+alter table llx_facture drop column fk_user;
 
 create table llx_societe_commerciaux
 (