diff --git a/src/Forms/DependentDropdownField.php b/src/Forms/DependentDropdownField.php
index ae3a5d7..8874f57 100644
--- a/src/Forms/DependentDropdownField.php
+++ b/src/Forms/DependentDropdownField.php
@@ -169,6 +169,10 @@ public function setSource($source)
      */
     public function Field($properties = [])
     {
+        if (!is_subclass_of(Controller::curr(), LeftAndMain::class)) {
+            Requirements::javascript('silverstripe/admin: thirdparty/jquery-entwine/dist/jquery.entwine-dist.js');
+        }
+        
         Requirements::javascript(
             'sheadawson/silverstripe-dependentdropdownfield:client/js/dependentdropdownfield.js'
         );