diff --git a/htdocs/install/mysql/tables/llx_paiement.sql b/htdocs/install/mysql/tables/llx_paiement.sql
index 2a287ac7e89..eb372366fc9 100644
--- a/htdocs/install/mysql/tables/llx_paiement.sql
+++ b/htdocs/install/mysql/tables/llx_paiement.sql
@@ -31,6 +31,8 @@ create table llx_paiement
   fk_paiement      integer NOT NULL,
   num_paiement     varchar(50),
   note             text,
+  ext_payment_id   varchar(128),        -- external id of payment (for example Stripe charge id)
+  ext_payment_site varchar(128),				-- name of external paymentmode (for example "stripe")
   fk_bank          integer NOT NULL DEFAULT 0,
   fk_user_creat    integer,								-- utilisateur qui a cree l'info
   fk_user_modif    integer,								-- utilisateur qui a modifie l'info