diff --git a/src/Rule/Required.php b/src/Rule/Required.php
index 6bfbb32..4babb2b 100644
--- a/src/Rule/Required.php
+++ b/src/Rule/Required.php
@@ -50,7 +50,7 @@ public function validate($value, $field = null, $allFields = null)
 			return false;
 		}
 
-		return ($value === 0 or $value === false or ! empty($value));
+		return ! ($value === false or $value === null or $value === '' or $value === array());
 	}
 
 }