diff --git a/htdocs/don/class/don.class.php b/htdocs/don/class/don.class.php
index eedd82fc7e0..a6fa9fa987d 100644
--- a/htdocs/don/class/don.class.php
+++ b/htdocs/don/class/don.class.php
@@ -401,7 +401,7 @@ class Don extends CommonObject
 		$sql .= ", '".$this->db->escape($this->address)."'";
 		$sql .= ", '".$this->db->escape($this->zip)."'";
 		$sql .= ", '".$this->db->escape($this->town)."'";
-		$sql .= ", ".(int) $this->country_id;
+		$sql .= ", ".(int) ($this->country_id > 0 ? $this->country_id : 0);
 		$sql .= ", ".(int) $this->public;
 		$sql .= ", ".($this->fk_project > 0 ? (int) $this->fk_project : "null");
 	   	$sql .= ", ".(!empty($this->note_private) ? ("'".$this->db->escape($this->note_private)."'") : "NULL");