diff --git a/htdocs/install/mysql/migration/15.0.0-16.0.0.sql b/htdocs/install/mysql/migration/15.0.0-16.0.0.sql
index addba742afb..9226326d7f0 100644
--- a/htdocs/install/mysql/migration/15.0.0-16.0.0.sql
+++ b/htdocs/install/mysql/migration/15.0.0-16.0.0.sql
@@ -96,6 +96,8 @@ CREATE TABLE llx_stock_mouvement_extrafields (
     import_key varchar(14)
 )ENGINE=innodb;
 
+ALTER TABLE llx_stock_mouvement_extrafields ADD INDEX idx_stock_mouvement_extrafields (fk_object);
+
 
 -- Facture fourn rec
 CREATE TABLE llx_facture_fourn_rec
@@ -142,7 +144,6 @@ CREATE TABLE llx_facture_fourn_rec
     nb_gen_max                  integer DEFAULT NULL,
     auto_validate               integer DEFAULT 0,
     generate_pdf                integer DEFAULT 1
-
 )ENGINE=innodb;
 
 ALTER TABLE llx_facture_fourn_rec ADD UNIQUE INDEX uk_facture_fourn_rec_ref (titre, entity);
diff --git a/htdocs/install/mysql/tables/llx_stock_mouvement_extrafields.key.sql b/htdocs/install/mysql/tables/llx_stock_mouvement_extrafields.key.sql
new file mode 100644
index 00000000000..61909435b00
--- /dev/null
+++ b/htdocs/install/mysql/tables/llx_stock_mouvement_extrafields.key.sql
@@ -0,0 +1,21 @@
+-- ============================================================================
+-- Copyright (C) 2002-2004 Rodolphe Quiedeville <rodolphe@quiedeville.org>
+-- Copyright (C) 2004-2005 Laurent Destailleur  <eldy@users.sourceforge.net>
+--
+-- This program is free software; you can redistribute it and/or modify
+-- it under the terms of the GNU General Public License as published by
+-- the Free Software Foundation; either version 3 of the License, or
+-- (at your option) any later version.
+--
+-- This program is distributed in the hope that it will be useful,
+-- but WITHOUT ANY WARRANTY; without even the implied warranty of
+-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+-- GNU General Public License for more details.
+--
+-- You should have received a copy of the GNU General Public License
+-- along with this program. If not, see <https://www.gnu.org/licenses/>.
+--
+-- ============================================================================
+
+
+ALTER TABLE llx_stock_mouvement_extrafields ADD INDEX idx_stock_mouvement_extrafields (fk_object);