diff --git a/htdocs/supplier_proposal/class/supplier_proposal.class.php b/htdocs/supplier_proposal/class/supplier_proposal.class.php
index bb8387c55e3..56d872126df 100644
--- a/htdocs/supplier_proposal/class/supplier_proposal.class.php
+++ b/htdocs/supplier_proposal/class/supplier_proposal.class.php
@@ -13,7 +13,7 @@
  * Copyright (C) 2014      Marcos García            <marcosgdf@gmail.com>
  * Copyright (C) 2016      Ferran Marcet            <fmarcet@2byte.es>
  * Copyright (C) 2018      Nicolas ZABOURI			<info@inovea-conseil.com>
- * Copyright (C) 2019      Frédéric France          <frederic.france@netlogic.fr>
+ * Copyright (C) 2019-2020 Frédéric France          <frederic.france@netlogic.fr>
  * Copyright (C) 2020		Tobias Sekan			<tobias.sekan@startmail.com>
  *
  * This program is free software; you can redistribute it and/or modify
@@ -177,8 +177,6 @@ class SupplierProposal extends CommonObject
 	public $nbtodo;
 	public $nbtodolate;
 
-	public $specimen;
-
 	// Multicurrency
 	/**
 	 * @var int ID