diff --git a/modules/field/views_handler_filter_field_list.inc b/modules/field/views_handler_filter_field_list.inc
index 8edf79b..440d55b 100644
--- a/modules/field/views_handler_filter_field_list.inc
+++ b/modules/field/views_handler_filter_field_list.inc
@@ -11,6 +11,20 @@
  * @ingroup views_filter_handlers
  */
 class views_handler_filter_field_list extends views_handler_filter_many_to_one {
+
+  function init(&$view, &$options) {
+    parent::init($view, $options);
+    // Migrate the settings from the old filter_in_operator values to filter_many_to_one.
+    if ($this->options['operator'] == 'in') {
+      $this->options['operator'] = 'or';
+    }
+    if ($this->options['operator'] == 'not in') {
+      $this->options['operator'] = 'not';
+    }
+    $this->operator = $this->options['operator'];
+  }
+
+
   function get_value_options() {
     $field = field_info_field($this->definition['field_name']);
     $this->value_options = list_allowed_values($field);