--- varnish.module	2010-09-13 23:09:22.000000000 +0200
+++ varnish.module	2010-09-13 23:09:25.000000000 +0200
@@ -207,6 +207,7 @@ function _varnish_terminal_run($command)
 
     // Do we need to authenticate?
     if ($status['code'] == 107) { // Require authentication
+      $secret = variable_get('varnish_control_key', '');
       $challenge = substr($status['msg'], 0, 32);
       $pack = $challenge ."\x0A". $secret ."\x0A". $challenge ."\x0A";
       $key = hash('sha256', $pack);