diff --git a/installer/index.php b/installer/index.php
index bb1b1ba..572ef80 100644
--- a/installer/index.php
+++ b/installer/index.php
@@ -43,7 +43,7 @@ ini_set('error_reporting', E_ALL&~E_NOTICE);
 ini_set('display_errors', 1);
 
 define('INSTALL_PATH', realpath(dirname(__FILE__) . '/../').'/');
-define('RCMAIL_CONFIG_DIR', INSTALL_PATH . 'config');
+define('RCMAIL_CONFIG_DIR', '/etc/roundcubemail');
 
 $include_path  = INSTALL_PATH . 'program/lib' . PATH_SEPARATOR;
 $include_path .= INSTALL_PATH . 'program' . PATH_SEPARATOR;
diff --git a/program/include/iniset.php b/program/include/iniset.php
index f223b0d..630001f 100644
--- a/program/include/iniset.php
+++ b/program/include/iniset.php
@@ -46,15 +46,12 @@ define('RCMAIL_VERSION', '0.8.1');
 define('RCMAIL_CHARSET', 'UTF-8');
 define('JS_OBJECT_NAME', 'rcmail');
 define('RCMAIL_START', microtime(true));
+define('RCMAIL_CONFIG_DIR', '/etc/roundcubemail');
 
 if (!defined('INSTALL_PATH')) {
     define('INSTALL_PATH', dirname($_SERVER['SCRIPT_FILENAME']).'/');
 }
 
-if (!defined('RCMAIL_CONFIG_DIR')) {
-    define('RCMAIL_CONFIG_DIR', INSTALL_PATH . 'config');
-}
-
 // make sure path_separator is defined
 if (!defined('PATH_SEPARATOR')) {
     define('PATH_SEPARATOR', (strtoupper(substr(PHP_OS, 0, 3)) == 'WIN') ? ';' : ':');