diff --git a/htdocs/install/mysql/migration/4.0.0-5.0.0.sql b/htdocs/install/mysql/migration/4.0.0-5.0.0.sql
index 4d653644f39..9b65050b663 100644
--- a/htdocs/install/mysql/migration/4.0.0-5.0.0.sql
+++ b/htdocs/install/mysql/migration/4.0.0-5.0.0.sql
@@ -219,6 +219,15 @@ create table llx_user_employment
 )ENGINE=innodb;
 
 
+ALTER TABLE llx_expensereport ADD INDEX idx_expensereport_date_debut (date_debut);
+ALTER TABLE llx_expensereport ADD INDEX idx_expensereport_date_fin (date_fin);
+ALTER TABLE llx_expensereport ADD INDEX idx_expensereport_fk_statut (fk_statut);
+
+ALTER TABLE llx_expensereport ADD INDEX idx_expensereport_fk_user_author (fk_user_author);
+ALTER TABLE llx_expensereport ADD INDEX idx_expensereport_fk_user_valid (fk_user_valid);
+ALTER TABLE llx_expensereport ADD INDEX idx_expensereport_fk_user_approve (fk_user_approve);
+ALTER TABLE llx_expensereport ADD INDEX idx_expensereport_fk_refuse (fk_user_approve);
+
 
 -- Sequence to removed duplicated values of llx_links. Use serveral times if you still have duplicate.
 drop table tmp_links_double;
@@ -230,5 +239,7 @@ drop table tmp_links_double;
 
 ALTER TABLE llx_links ADD UNIQUE INDEX uk_links (objectid,label);
 
+ALTER TABLE llx_expensereport ADD UNIQUE INDEX idx_expensereport_uk_ref (ref, entity);
+
 UPDATE llx_projet_task SET ref = NULL WHERE ref = '';
 ALTER TABLE llx_projet_task ADD UNIQUE INDEX uk_projet_task_ref (ref, entity);
diff --git a/htdocs/install/mysql/tables/llx_expensereport.key.sql b/htdocs/install/mysql/tables/llx_expensereport.key.sql
new file mode 100644
index 00000000000..a7e4fd54425
--- /dev/null
+++ b/htdocs/install/mysql/tables/llx_expensereport.key.sql
@@ -0,0 +1,36 @@
+-- ===================================================================
+-- Copyright (C) 2005      Laurent Destailleur  <eldy@users.sourceforge.net>
+-- Copyright (C) 2008-2010 Regis Houssin        <regis.houssin@capnetworks.com>
+--
+-- 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_expensereport ADD UNIQUE INDEX idx_expensereport_uk_ref (ref, entity);
+
+ALTER TABLE llx_expensereport ADD INDEX idx_expensereport_date_debut (date_debut);
+ALTER TABLE llx_expensereport ADD INDEX idx_expensereport_date_fin (date_fin);
+ALTER TABLE llx_expensereport ADD INDEX idx_expensereport_fk_statut (fk_statut);
+
+ALTER TABLE llx_expensereport ADD INDEX idx_expensereport_fk_user_author (fk_user_author);
+ALTER TABLE llx_expensereport ADD INDEX idx_expensereport_fk_user_valid (fk_user_valid);
+ALTER TABLE llx_expensereport ADD INDEX idx_expensereport_fk_user_approve (fk_user_approve);
+ALTER TABLE llx_expensereport ADD INDEX idx_expensereport_fk_refuse (fk_user_approve);
+
+--ALTER TABLE llx_expensereport ADD CONSTRAINT fk_expensereport_fk_user_author		FOREIGN KEY (fk_user_author)	 REFERENCES llx_user (rowid);
+--ALTER TABLE llx_expensereport ADD CONSTRAINT fk_expensereport_fk_user_valid 		FOREIGN KEY (fk_user_valid)		 REFERENCES llx_user (rowid);
+--ALTER TABLE llx_expensereport ADD CONSTRAINT fk_expensereport_fk_user_approve 		FOREIGN KEY (fk_user_approve)	 REFERENCES llx_user (rowid);
+--ALTER TABLE llx_expensereport ADD CONSTRAINT fk_expensereport_fk_refuse				FOREIGN KEY (fk_user_refuse)     REFERENCES llx_user (rowid);
+