diff --git a/src/FormBuilder.php b/src/FormBuilder.php
index 6a228ff7..f0250ae3 100644
--- a/src/FormBuilder.php
+++ b/src/FormBuilder.php
@@ -963,7 +963,7 @@ protected function getRadioCheckedState($name, $value, $checked)
     {
         $request = $this->request($name);
 
-        if ($this->missingOldAndModel($name) && !$request) {
+        if ($this->missingOldAndModel($name) && is_null($request)) {
             return $checked;
         }