diff --git a/htdocs/societe/class/societe.class.php b/htdocs/societe/class/societe.class.php
index 686c301af79..0078c86245f 100644
--- a/htdocs/societe/class/societe.class.php
+++ b/htdocs/societe/class/societe.class.php
@@ -408,6 +408,14 @@ class Societe extends CommonObject
 	 */
 	public $idprof1;
 
+	/**
+	 * @var string Professional ID 1
+	 * @deprecated
+	 * @see $idprof1
+	 */
+	public $siren;
+
+
 	/**
 	 * Professional ID 2 (Ex: Siret in France)
 	 * @var string