diff --git a/_admin.php b/_admin.php
deleted file mode 100644
index 817be6d..0000000
--- a/_admin.php
+++ /dev/null
@@ -1,20 +0,0 @@
-<?php
-/**
- * @brief improve, a plugin for Dotclear 2
- *
- * @package Dotclear
- * @subpackage Plugin
- *
- * @author Jean-Christian Denis and contributors
- *
- * @copyright Jean-Christian Denis
- * @copyright GPL-2.0 https://www.gnu.org/licenses/gpl-2.0.html
- */
-declare(strict_types=1);
-
-$admin = implode('\\', ['Dotclear', 'Plugin', basename(__DIR__), 'Admin']);
-if ($admin::init()) {
-    return $admin::process();
-}
-
-return null;
diff --git a/_config.php b/_config.php
deleted file mode 100644
index 33c5281..0000000
--- a/_config.php
+++ /dev/null
@@ -1,19 +0,0 @@
-<?php
-/**
- * @brief improve, a plugin for Dotclear 2
- *
- * @package Dotclear
- * @subpackage Plugin
- *
- * @author Jean-Christian Denis and contributors
- *
- * @copyright Jean-Christian Denis
- * @copyright GPL-2.0 https://www.gnu.org/licenses/gpl-2.0.html
- */
-declare(strict_types=1);
-
-$config = implode('\\', ['Dotclear', 'Plugin', basename(__DIR__), 'Config']);
-if ($config::init()) {
-    $config::process();
-    $config::render();
-}
diff --git a/_install.php b/_install.php
deleted file mode 100644
index 1a984f4..0000000
--- a/_install.php
+++ /dev/null
@@ -1,20 +0,0 @@
-<?php
-/**
- * @brief improve, a plugin for Dotclear 2
- *
- * @package Dotclear
- * @subpackage Plugin
- *
- * @author Jean-Christian Denis and contributors
- *
- * @copyright Jean-Christian Denis
- * @copyright GPL-2.0 https://www.gnu.org/licenses/gpl-2.0.html
- */
-declare(strict_types=1);
-
-$install = implode('\\', ['Dotclear', 'Plugin', basename(__DIR__), 'Install']);
-if ($install::init()) {
-    return $install::process();
-}
-
-return null;
diff --git a/_prepend.php b/_prepend.php
deleted file mode 100644
index 5eb335d..0000000
--- a/_prepend.php
+++ /dev/null
@@ -1,22 +0,0 @@
-<?php
-/**
- * @brief improve, a plugin for Dotclear 2
- *
- * @package Dotclear
- * @subpackage Plugin
- *
- * @author Jean-Christian Denis and contributors
- *
- * @copyright Jean-Christian Denis
- * @copyright GPL-2.0 https://www.gnu.org/licenses/gpl-2.0.html
- */
-declare(strict_types=1);
-
-$prepend = implode('\\', ['Dotclear', 'Plugin', basename(__DIR__), 'Prepend']);
-if (!class_exists($prepend)) {
-    require implode(DIRECTORY_SEPARATOR, [__DIR__, 'inc', 'Prepend.php']);
-
-    if ($prepend::init()) {
-        $prepend::process();
-    }
-}
diff --git a/_uninstall.php b/_uninstall.php
deleted file mode 100644
index 99a9c0c..0000000
--- a/_uninstall.php
+++ /dev/null
@@ -1,24 +0,0 @@
-<?php
-/**
- * @brief improve, a plugin for Dotclear 2
- *
- * @package Dotclear
- * @subpackage Plugin
- *
- * @author Jean-Christian Denis and contributors
- *
- * @copyright Jean-Christian Denis
- * @copyright GPL-2.0 https://www.gnu.org/licenses/gpl-2.0.html
- */
-declare(strict_types=1);
-
-$uninstall = implode('\\', ['Dotclear', 'Plugin', basename(__DIR__), 'Uninstall']);
-
-// cope with disabled plugin
-if (!class_exists($uninstall)) {
-    require implode(DIRECTORY_SEPARATOR, [__DIR__, 'inc', 'Uninstall.php']);
-}
-
-if ($uninstall::init()) {
-    $uninstall::process($this);
-}
diff --git a/inc/Action.php b/inc/Action.php
index d94e7fe..c78965f 100644
--- a/inc/Action.php
+++ b/inc/Action.php
@@ -83,7 +83,7 @@ abstract class Action
      */
     final public function __construct()
     {
-        $this->class_name = str_replace(Prepend::getActionsNS(), '', get_called_class());
+        $this->class_name = str_replace(Utils::getActionsNS(), '', get_called_class());
 
         $settings = dcCore::app()->blog->settings->get(Core::id())->get('settings_' . $this->class_name);
         if (null != $settings) {
diff --git a/inc/Admin.php b/inc/Admin.php
index d04aaad..434899b 100644
--- a/inc/Admin.php
+++ b/inc/Admin.php
@@ -19,6 +19,7 @@ use dcAdmin;
 use dcCore;
 use dcPage;
 use dcFavorites;
+use dcNsProcess;
 
 /* clearbricks */
 use Clearbricks;
@@ -29,10 +30,8 @@ use files;
  *
  * Add menu and dashboard icons, load Improve action modules.
  */
-class Admin
+class Admin extends dcNsProcess
 {
-    protected static $init = false;
-
     public static function init(): bool
     {
         if (defined('DC_CONTEXT_ADMIN')) {
@@ -42,7 +41,7 @@ class Admin
         return self::$init;
     }
 
-    public static function process()
+    public static function process(): bool
     {
         if (!self::$init) {
             return false;
@@ -69,11 +68,13 @@ class Admin
             dcCore::app()->auth->isSuperAdmin()
         );
 
-        foreach (files::scandir(Prepend::getActionsDir()) as $file) {
-            if (is_file(Prepend::getActionsDir() . $file) && '.php' == substr($file, -4)) {
-                Clearbricks::lib()->autoload([Prepend::getActionsNS() . substr($file, 0, -4) => Prepend::getActionsDir() . $file]);
-                dcCore::app()->addBehavior('improveAddAction', [Prepend::getActionsNS() . substr($file, 0, -4), 'create']); /* @phpstan-ignore-line */
+        foreach (files::scandir(Utils::getActionsDir()) as $file) {
+            if (is_file(Utils::getActionsDir() . $file) && '.php' == substr($file, -4)) {
+                Clearbricks::lib()->autoload([Utils::getActionsNS() . substr($file, 0, -4) => Utils::getActionsDir() . $file]);
+                dcCore::app()->addBehavior('improveAddAction', [Utils::getActionsNS() . substr($file, 0, -4), 'create']); /* @phpstan-ignore-line */
             }
         }
+
+        return true;
     }
 }
diff --git a/inc/Config.php b/inc/Config.php
index 13be04a..e70af82 100644
--- a/inc/Config.php
+++ b/inc/Config.php
@@ -17,6 +17,7 @@ namespace Dotclear\Plugin\improve;
 /* dotclear */
 use dcCore;
 use dcPage;
+use dcNsProcess;
 
 /* clearbricks */
 use form;
@@ -29,10 +30,8 @@ use Exception;
  *
  * Set preference for this plugin.
  */
-class Config
+class Config extends dcNsProcess
 {
-    protected static $init = false;
-
     public static function init(): bool
     {
         if (defined('DC_CONTEXT_ADMIN')) {
@@ -43,14 +42,14 @@ class Config
         return self::$init;
     }
 
-    public static function process(): void
+    public static function process(): bool
     {
         if (!self::$init) {
-            return;
+            return false;
         }
 
         if (empty($_POST['save'])) {
-            return;
+            return true;
         }
 
         try {
@@ -70,9 +69,11 @@ class Config
         } catch (Exception $e) {
             dcCore::app()->error->add($e->getMessage());
         }
+
+        return true;
     }
 
-    public static function render()
+    public static function render(): void
     {
         if (!self::$init) {
             return;
diff --git a/inc/Core.php b/inc/Core.php
index 63d8193..cff7d60 100644
--- a/inc/Core.php
+++ b/inc/Core.php
@@ -76,7 +76,7 @@ class Core
 
     public static function id()
     {
-        return basename(dirname(dirname(__DIR__)));
+        return basename(dirname(__DIR__));
     }
 
     public function getLogs(): array
diff --git a/inc/Install.php b/inc/Install.php
index da88bb0..9da1345 100644
--- a/inc/Install.php
+++ b/inc/Install.php
@@ -16,6 +16,7 @@ namespace Dotclear\Plugin\improve;
 
 /* dotclear */
 use dcCore;
+use dcNsProcess;
 
 /* php */
 use Exception;
@@ -26,7 +27,7 @@ use Exception;
  * Set default settings and version
  * and manage changes on updates.
  */
-class Install
+class Install extends dcNsProcess
 {
     /** @var array Improve default settings */
     private static $default_settings = [[
@@ -36,9 +37,6 @@ class Install
         'string',
     ]];
 
-    // Nothing to change below
-    protected static $init = false;
-
     public static function init(): bool
     {
         self::$init = defined('DC_CONTEXT_ADMIN') && dcCore::app()->newVersion(Core::id(), dcCore::app()->plugins->moduleInfo(Core::id(), 'version'));
@@ -46,7 +44,7 @@ class Install
         return self::$init;
     }
 
-    public static function process(): ?bool
+    public static function process(): bool
     {
         if (!self::$init) {
             return false;
diff --git a/inc/Manage.php b/inc/Manage.php
index 816a867..ed9c868 100644
--- a/inc/Manage.php
+++ b/inc/Manage.php
@@ -20,6 +20,7 @@ use dcPage;
 use dcAdminNotices;
 use dcThemes;
 use dcUtils;
+use dcNsProcess;
 
 /* clearbricks */
 use html;
@@ -34,7 +35,7 @@ use Exception;
  * Display page and configure modules
  * and launch action.
  */
-class Manage
+class Manage extends dcNsProcess
 {
     /** @var Core $improve  improve core instance */
     private static $improve = null;
@@ -162,10 +163,10 @@ class Manage
         return null;
     }
 
-    public static function process(): void
+    public static function process(): bool
     {
         if (!self::$init) {
-            return;
+            return false;
         }
 
         $log_id = '';
@@ -209,6 +210,8 @@ class Manage
         if ($done) {
             dcCore::app()->adminurl->redirect('admin.plugin.' . Core::id(), ['type' => self::$type, 'module' => self::$module, 'upd' => $log_id]);
         }
+
+        return true;
     }
 
     public static function render(): void
diff --git a/inc/Utils.php b/inc/Utils.php
index 93c3956..99c34a7 100644
--- a/inc/Utils.php
+++ b/inc/Utils.php
@@ -14,40 +14,11 @@ declare(strict_types=1);
 
 namespace Dotclear\Plugin\improve;
 
-use Clearbricks;
-
 /**
- * Improve prepend class
- *
- * Manage autoload and some action module helpers.
+ * Improve utils class
  */
-class Prepend
+class Utils
 {
-    protected static $init = false;
-
-    public static function init(): bool
-    {
-        self::$init = defined('DC_RC_PATH') && defined('DC_CONTEXT_ADMIN');
-
-        return self::$init;
-    }
-
-    public static function process()
-    {
-        if (!self::$init) {
-            return false;
-        }
-
-        // Core plugin class
-        foreach (['Core', 'Action', 'Module'] as $class) {
-            Clearbricks::lib()->autoload([__NAMESPACE__ . '\\' . $class => implode(DIRECTORY_SEPARATOR, [__DIR__, 'core', $class . '.php'])]);
-        }
-
-        // Dotclear plugin class
-        foreach (['Admin', 'Config', 'Install', 'Manage', 'Prepend', 'Uninstall'] as $class) {
-            Clearbricks::lib()->autoload([__NAMESPACE__ . '\\' . $class => implode(DIRECTORY_SEPARATOR, [__DIR__, $class . '.php'])]);
-        }
-    }
 
     public static function getActionsDir(): string
     {
diff --git a/index.php b/index.php
deleted file mode 100644
index f250cd9..0000000
--- a/index.php
+++ /dev/null
@@ -1,19 +0,0 @@
-<?php
-/**
- * @brief improve, a plugin for Dotclear 2
- *
- * @package Dotclear
- * @subpackage Plugin
- *
- * @author Jean-Christian Denis and contributors
- *
- * @copyright Jean-Christian Denis
- * @copyright GPL-2.0 https://www.gnu.org/licenses/gpl-2.0.html
- */
-declare(strict_types=1);
-
-$manage = implode('\\', ['Dotclear', 'Plugin', basename(__DIR__), 'Manage']);
-if ($manage::init()) {
-    $manage::process();
-    $manage::render();
-}