diff --git a/mysql/migration/2.2.0-2.4.0.sql b/mysql/migration/2.2.0-2.4.0.sql
index c0959b9cfe0..6a2255fda7d 100644
--- a/mysql/migration/2.2.0-2.4.0.sql
+++ b/mysql/migration/2.2.0-2.4.0.sql
@@ -26,6 +26,11 @@ update llx_const set name='SOCIETE_CODEFOURNISSEUR_ADDON' where name='CODEFOURNI
 delete from llx_const where name='CODECLIENT_ADDON';
 delete from llx_const where name='CODEFOURNISSEUR_ADDON';
 
+alter table llx_const add tms timestamp;
+update llx_const set tms=sysdate() where tms is null;
+update llx_const set tms=sysdate() where tms <= 0;
+
+
 alter table llx_document_model modify type varchar(20) NOT NULL;
 
 DELETE FROM llx_rights_def WHERE module = 'menudb';
diff --git a/mysql/tables/llx_const.sql b/mysql/tables/llx_const.sql
index d1c4867123a..d8d703e01e1 100644
--- a/mysql/tables/llx_const.sql
+++ b/mysql/tables/llx_const.sql
@@ -31,6 +31,6 @@ create table llx_const
   type        enum('yesno','texte','chaine'),
   visible     tinyint DEFAULT 1 NOT NULL,
   note        text,
-
+  tms         timestamp
   UNIQUE INDEX(name)
 )type=innodb;