diff --git a/library/Director/Web/Form/Element/ExtensibleSet.php b/library/Director/Web/Form/Element/ExtensibleSet.php
index a5b16d2f..f3c968fc 100644
--- a/library/Director/Web/Form/Element/ExtensibleSet.php
+++ b/library/Director/Web/Form/Element/ExtensibleSet.php
@@ -20,7 +20,7 @@ class ExtensibleSet extends FormElement
     public function getValue()
     {
         $value = parent::getValue();
-        if (is_string($value)) {
+        if (is_string($value) || is_numeric($value)) {
             $value = [$value];
         } elseif ($value === null) {
             return $value;