diff --git a/library/Director/PropertyModifier/PropertyModifierMakeBoolean.php b/library/Director/PropertyModifier/PropertyModifierMakeBoolean.php
index ed91bcff8..29728ef9c 100644
--- a/library/Director/PropertyModifier/PropertyModifierMakeBoolean.php
+++ b/library/Director/PropertyModifier/PropertyModifierMakeBoolean.php
@@ -49,7 +49,7 @@ public static function addSettingsFormFields(QuickForm $form)
 
     public function transform($value)
     {
-        if ($value === false || $value === true || $value === null) {
+        if ($value === false || $value === true) {
             return $value;
         }