diff --git a/addressfield.module b/addressfield.module
index 06affd4..c3dfff0 100644
--- a/addressfield.module
+++ b/addressfield.module
@@ -746,6 +746,7 @@ function _addressfield_country_options_list($field = NULL, $instance = NULL) {
       }
     }
   }
+  $countries[''] = '- None -';
 
   return $countries;
 }