diff --git a/demos/form-control/dropdown-plus.php b/demos/form-control/dropdown-plus.php
index 6e7e75cc94..cdfd62ff40 100644
--- a/demos/form-control/dropdown-plus.php
+++ b/demos/form-control/dropdown-plus.php
@@ -122,14 +122,14 @@
 $form->addControl('html_multi', [
     Form\Control\Dropdown::class,
     'caption' => 'HTML multiple',
-    'isMultiple' => true,
+    'multiple' => true,
     'values' => $htmlValues,
 ]);
 
 $form->addControl('html_multi2', [
     Form\Control\Dropdown::class,
     'caption' => 'HTML multiple allow addition',
-    'isMultiple' => true,
+    'multiple' => true,
     'values' => $htmlValues,
     'dropdownOptions' => ['allowAdditions' => true],
 ]);