diff --git a/min/index.php b/min/index.php
index 79b047d..f9f994b 100644
--- a/min/index.php
+++ b/min/index.php
@@ -9,11 +9,17 @@
 
 define('MINIFY_MIN_DIR', dirname(__FILE__));
 
+if (defined('MINIFY_CUSTOM_CONFIG_DIR')) {
+    define('MINIFY_CONFIG_DIR', MINIFY_CUSTOM_CONFIG_DIR);
+} else {
+    define('MINIFY_CONFIG_DIR', MINIFY_MIN_DIR);
+}
+
 // load config
-require MINIFY_MIN_DIR . '/config.php';
+require MINIFY_CONFIG_DIR . '/config.php';
 
 if (isset($_GET['test'])) {
-    include MINIFY_MIN_DIR . '/config-test.php';
+    include MINIFY_CONFIG_DIR . '/config-test.php';
 }
 
 require "$min_libPath/Minify/Loader.php";
@@ -69,4 +75,4 @@ if (isset($_GET['f']) || isset($_GET['g'])) {
 } else {
     header("Location: /");
     exit();
-}
\ No newline at end of file
+}