diff --git a/plugins/entityreference_handler/entityreference_entity_field.inc b/plugins/entityreference_handler/entityreference_entity_field.inc
index 1e3bc85..e00c32b 100644
--- a/plugins/entityreference_handler/entityreference_entity_field.inc
+++ b/plugins/entityreference_handler/entityreference_entity_field.inc
@@ -22,7 +22,7 @@ class EntityReferenceHandler_field extends EntityReferenceHandler_base {
   /**
    * Implements EntityReferenceHandler::settingsForm().
    */
-  public static function settingsForm($field) {
+  public static function settingsForm($field, $instance) {
     $form = parent::settingsForm($field);
     // TODO: Load the fields for the selected bundles via some kind of ajaxy hotness.
     $form['title_field'] = array(