diff --git a/libraries/auth/cookie.auth.lib.php b/libraries/auth/cookie.auth.lib.php
index d43326c9d3..c7aae3f3d5 100644
--- a/libraries/auth/cookie.auth.lib.php
+++ b/libraries/auth/cookie.auth.lib.php
@@ -33,7 +33,7 @@ if (function_exists('mcrypt_encrypt')) {
         srand((double) microtime() * 1000000);
          $td = mcrypt_module_open(MCRYPT_BLOWFISH, '', MCRYPT_MODE_CBC, '');
          if ($td === false) {
-            PMA_warnMissingExtension('mcrypt');
+             die('Failed to use Blowfish from mcrypt!');
          }
         $iv = mcrypt_create_iv(mcrypt_enc_get_iv_size($td), MCRYPT_RAND);
         $GLOBALS['PMA_Config']->setCookie('pma_mcrypt_iv', base64_encode($iv));