diff --git a/phpseclib/Crypt/Hash.php b/phpseclib/Crypt/Hash.php
index 6c5d7059..6b539a49 100644
--- a/phpseclib/Crypt/Hash.php
+++ b/phpseclib/Crypt/Hash.php
@@ -62,7 +62,7 @@ class Hash
      * @var int
      * @access private
      */
-    var $length = false;
+    var $length;
 
     /**
      * Hash Algorithm