diff --git a/htdocs/main.inc.php3 b/htdocs/main.inc.php3
index 8b9fdd64d20..fad2c440d2a 100644
--- a/htdocs/main.inc.php3
+++ b/htdocs/main.inc.php3
@@ -29,6 +29,7 @@ require ($GLOBALS["DOCUMENT_ROOT"]."/societe.class.php3");
 require ($GLOBALS["DOCUMENT_ROOT"]."/html.form.class.php");
 require ($GLOBALS["DOCUMENT_ROOT"]."/rtplang.class.php");
 require ($GLOBALS["DOCUMENT_ROOT"]."/boxes.php");
+require ($GLOBALS["DOCUMENT_ROOT"]."/address.class.php");
 
 $conf = new Conf();