diff --git a/hwe/j_install_db.php b/hwe/j_install_db.php
index c6eb110e..44f18e79 100644
--- a/hwe/j_install_db.php
+++ b/hwe/j_install_db.php
@@ -87,6 +87,20 @@ if($result !== true){
 }
 
 if (!class_exists('\\sammo\\DB')) {
+    $loader = require __DIR__.'/../vendor/autoload.php';
+    $loader->addClassMap((function () {
+        $d_settingMap = [];
+        foreach (glob(__DIR__.'/d_setting/*.orig.php') as $filepath) {
+            $filepath = str_replace('.orig.php', '.php', $filepath);
+            if(!file_exists($filepath)) {
+                continue;
+            }
+            $filename = basename($filepath);
+            $classname = explode('.', $filename)[0];
+            $d_settingMap['sammo\\'.$classname] = $filepath;
+        };
+        return $d_settingMap;
+    })());
     opcache_reset();
 }