diff --git a/lib/Cake/View/Helper/FormHelper.php b/lib/Cake/View/Helper/FormHelper.php
index f16b2453396..87941ce5fcd 100644
--- a/lib/Cake/View/Helper/FormHelper.php
+++ b/lib/Cake/View/Helper/FormHelper.php
@@ -1303,7 +1303,7 @@ public function radio($fieldName, $options = array(), $attributes = array()) {
 			if (isset($value) && $optValue == $value) {
 				$optionsHere['checked'] = 'checked';
 			}
-			if (!empty($disabled) && (is_bool($disabled) || in_array($optValue, $disabled))) {
+			if ($disabled && (!is_array($disabled) || in_array($optValue, $disabled))) {
 				$optionsHere['disabled'] = true;
 			}
 			$tagName = Inflector::camelize(