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 27449c9e9e9..035cd0d48c5 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
@@ -374,4 +374,5 @@ insert into llx_c_type_contact(rowid, element, source, code, libelle, active ) v
 insert into llx_c_type_contact(rowid, element, source, code, libelle, active ) values (111, 'supplier_proposal', 'external', 'BILLING',       'Contact fournisseur facturation', 1);
 insert into llx_c_type_contact(rowid, element, source, code, libelle, active ) values (112, 'supplier_proposal', 'external', 'SHIPPING',      'Contact fournisseur livraison', 1);
 insert into llx_c_type_contact(rowid, element, source, code, libelle, active ) values (113, 'supplier_proposal', 'external', 'SERVICE',       'Contact fournisseur prestation', 1);
-  
\ No newline at end of file
+
+ALTER TABLE llx_ticket_extrafields ADD INDEX idx_ticket_extrafields (fk_object);
diff --git a/htdocs/install/mysql/tables/llx_ticket_extrafields.key.sql b/htdocs/install/mysql/tables/llx_ticket_extrafields.key.sql
new file mode 100644
index 00000000000..3baba56d9d4
--- /dev/null
+++ b/htdocs/install/mysql/tables/llx_ticket_extrafields.key.sql
@@ -0,0 +1,23 @@
+-- ===================================================================
+-- Copyright (C) 2002-2003 Rodolphe Quiedeville <rodolphe@quiedeville.org>
+-- Copyright (C) 2002-2003 Jean-Louis Bergamo   <jlb@j1b.org>
+-- Copyright (C) 2009      Regis Houssin        <regis.houssin@inodbox.com>
+-- Copyright (C) 2011      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 <http://www.gnu.org/licenses/>.
+--
+-- ===================================================================
+
+
+ALTER TABLE llx_ticket_extrafields ADD INDEX idx_ticket_extrafields (fk_object);