diff --git handlers/views_handler_argument_string.inc handlers/views_handler_argument_string.inc
index 02b6536..5dd10a4 100644
--- handlers/views_handler_argument_string.inc
+++ handlers/views_handler_argument_string.inc
@@ -33,6 +33,8 @@ class views_handler_argument_string extends views_handler_argument {
       $options['require_value'] = array('default' => FALSE);
     }
 
+    views_many_to_one_helper::option_definition($options);
+
     return $options;
   }
 
diff --git handlers/views_handler_filter_many_to_one.inc handlers/views_handler_filter_many_to_one.inc
index 9d5d1c9..ea8fe4b 100644
--- handlers/views_handler_filter_many_to_one.inc
+++ handlers/views_handler_filter_many_to_one.inc
@@ -21,6 +21,8 @@ class views_handler_filter_many_to_one extends views_handler_filter_in_operator
     $options['operator']['default'] = 'or';
     $options['value']['default'] = array();
 
+    views_many_to_one_helper::option_definition($options);
+
     return $options;
   }