diff --git a/htdocs/install/mysql/tables/llx_facturedet.sql b/htdocs/install/mysql/tables/llx_facturedet.sql
index ff2b28d9a7f..afd9a420c89 100644
--- a/htdocs/install/mysql/tables/llx_facturedet.sql
+++ b/htdocs/install/mysql/tables/llx_facturedet.sql
@@ -74,7 +74,8 @@ create table llx_facturedet
   multicurrency_subprice		double(24,8) DEFAULT 0,
   multicurrency_total_ht		double(24,8) DEFAULT 0,
   multicurrency_total_tva		double(24,8) DEFAULT 0,
-  multicurrency_total_ttc		double(24,8) DEFAULT 0
+  multicurrency_total_ttc		double(24,8) DEFAULT 0,
+  ref_ext varchar(255)
 )ENGINE=innodb;
 
 --