diff --git a/htdocs/install/mysql/migration/3.6.0-3.7.0.sql b/htdocs/install/mysql/migration/3.6.0-3.7.0.sql
index e6b8e526bf2445671427f3c457c1c1c19e7b329f..635154768bb55ffa04cc0178c959cce8a03931a1 100644
--- a/htdocs/install/mysql/migration/3.6.0-3.7.0.sql
+++ b/htdocs/install/mysql/migration/3.6.0-3.7.0.sql
@@ -20,6 +20,9 @@
 
 
 
+ALTER TABLE llx_fichinter ADD COLUMN ref_ext 	varchar(255);
+
+
 -- Defined only to have specific list for countries that can't use generic list (like argentina that need type A or B)
 ALTER TABLE llx_c_typent ADD COLUMN fk_country integer NULL AFTER libelle;
 
diff --git a/htdocs/install/mysql/tables/llx_fichinter.sql b/htdocs/install/mysql/tables/llx_fichinter.sql
index b2397b2d2c325adc2f8067a2242d56fb0667a790..242710a09938ecc62823558c3743002c2fcb23c3 100644
--- a/htdocs/install/mysql/tables/llx_fichinter.sql
+++ b/htdocs/install/mysql/tables/llx_fichinter.sql
@@ -24,6 +24,7 @@ create table llx_fichinter
   fk_projet			integer DEFAULT 0,          -- projet auquel est rattache la fiche
   fk_contrat		integer DEFAULT 0,          -- contrat auquel est rattache la fiche
   ref				varchar(30) NOT NULL,       -- number
+  ref_ext			varchar(255),
   entity			integer DEFAULT 1 NOT NULL, -- multi company id
   tms				timestamp,
   datec				datetime,                   -- date de creation