diff --git a/htdocs/contact/class/contact.class.php b/htdocs/contact/class/contact.class.php
index 7ca69871238..f3a5f170380 100644
--- a/htdocs/contact/class/contact.class.php
+++ b/htdocs/contact/class/contact.class.php
@@ -549,6 +549,7 @@ class Contact extends CommonObject
 		$this->fax = trim($this->fax);
 		$this->zip = (empty($this->zip) ? '' : trim($this->zip));
 		$this->town = (empty($this->town) ? '' : trim($this->town));
+		$this->ref_ext = trim($this->ref_ext);		
 		$this->setUpperOrLowerCase();
 		$this->country_id = ($this->country_id > 0 ? $this->country_id : $this->country_id);
 		if (empty($this->statut)) {
@@ -571,6 +572,7 @@ class Contact extends CommonObject
 		$sql .= ", address='".$this->db->escape($this->address)."'";
 		$sql .= ", zip='".$this->db->escape($this->zip)."'";
 		$sql .= ", town='".$this->db->escape($this->town)."'";
+		$sql .= ", ref_ext = ".(!empty($this->ref_ext) ? "'".$this->db->escape($this->ref_ext)."'" : "null");
 		$sql .= ", fk_pays=".($this->country_id > 0 ? $this->country_id : 'NULL');
 		$sql .= ", fk_departement=".($this->state_id > 0 ? $this->state_id : 'NULL');
 		$sql .= ", poste='".$this->db->escape($this->poste)."'";
diff --git a/htdocs/webservices/server_contact.php b/htdocs/webservices/server_contact.php
index 37d86dcded9..3a1a627863a 100644
--- a/htdocs/webservices/server_contact.php
+++ b/htdocs/webservices/server_contact.php
@@ -626,6 +626,7 @@ function updateContact($authentication, $contact)
 		if (!empty($object->id)) {
 			$objectfound = true;
 
+			$object->ref_ext = $contact['ref_ext'];
 
 			$object->firstname = $contact['firstname'];
 			$object->lastname = $contact['lastname'];