--- uc_addresses.module.original	2009-08-12 19:07:00.000000000 +0300
+++ uc_addresses.module	2009-08-12 19:07:03.000000000 +0300
@@ -1509,7 +1509,7 @@ function _uc_addresses_db_get_address($u
 
   // If $aid is present, return just the one address
 
-  if ($aid) {
+  if (!is_null($aid)) {
     $result = db_query("SELECT * FROM {uc_addresses} WHERE aid = %d ",	$aid);
 
     // Check to make sure there is data