diff --git a/src/ORM/FieldType/DBForeignKey.php b/src/ORM/FieldType/DBForeignKey.php
index 8b2aaa70b32..6b5ef56f513 100644
--- a/src/ORM/FieldType/DBForeignKey.php
+++ b/src/ORM/FieldType/DBForeignKey.php
@@ -79,7 +79,7 @@ public function scaffoldFormField($title = null, $params = null)
         $list = DataList::create($hasOneClass);
         $threshold = static::config()->get('dropdown_field_threshold');
         $overThreshold = $list->count() > $threshold;
-        $field = SearchableDropdownField::create($this->name, $title, $list, $labelField)
+        $field = SearchableDropdownField::create($this->name, $title, $list, null, $labelField)
             ->setIsLazyLoaded($overThreshold)
             ->setLazyLoadLimit($threshold);
         return $field;