diff --git a/application/config/config.php b/application/config/config.php
index b60d90aab..e10ca199b 100644
--- a/application/config/config.php
+++ b/application/config/config.php
@@ -66,7 +66,7 @@ $config['db_log_enabled'] = FALSE;
 |
 */
 $config['base_url'] = ((isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] == 'on') || (isset($_ENV['FORCE_HTTPS']) && $_ENV['FORCE_HTTPS'] == 'true')) ? 'https' : 'http';
-$config['base_url'] .= '://' . (ENVIRONMENT == "testing") ? 'localhost' : $_SERVER['HTTP_HOST'] ;
+$config['base_url'] .= '://' . ((ENVIRONMENT == "testing") ? 'localhost' : $_SERVER['HTTP_HOST']) ;
 $config['base_url'] .= str_replace(basename($_SERVER['SCRIPT_NAME']), '', $_SERVER['SCRIPT_NAME']);
 
 /*