diff --git a/htdocs/install/mysql/migration/19.0.0-20.0.0.sql b/htdocs/install/mysql/migration/19.0.0-20.0.0.sql
index a99b9731232..ef6cfc14731 100644
--- a/htdocs/install/mysql/migration/19.0.0-20.0.0.sql
+++ b/htdocs/install/mysql/migration/19.0.0-20.0.0.sql
@@ -288,3 +288,5 @@ ALTER TABLE llx_expeditiondet ADD COLUMN element_type varchar(50) DEFAULT 'order
 
 ALTER TABLE llx_receptiondet_batch CHANGE COLUMN fk_commande fk_element integer;
 ALTER TABLE llx_receptiondet_batch CHANGE COLUMN fk_commandefourndet fk_elementdet integer;
+
+ALTER TABLE llx_supplier_proposaldet MODIFY ref_fourn VARCHAR(128) NULL;
diff --git a/htdocs/install/mysql/tables/llx_supplier_proposaldet.sql b/htdocs/install/mysql/tables/llx_supplier_proposaldet.sql
index bbf3decd7fa..2e61c58cc18 100644
--- a/htdocs/install/mysql/tables/llx_supplier_proposaldet.sql
+++ b/htdocs/install/mysql/tables/llx_supplier_proposaldet.sql
@@ -47,7 +47,7 @@ CREATE TABLE llx_supplier_proposaldet (
   fk_product_fournisseur_price integer DEFAULT NULL,
   special_code integer DEFAULT 0,
   rang integer DEFAULT 0,
-  ref_fourn varchar(30) DEFAULT NULL,
+  ref_fourn varchar(128) DEFAULT NULL,
   fk_multicurrency        integer,
   multicurrency_code      varchar(3),
   multicurrency_subprice  double(24,8) DEFAULT 0,