diff --git a/src/Backend.php b/src/Backend.php
index 3f0ea31..67ce112 100644
--- a/src/Backend.php
+++ b/src/Backend.php
@@ -15,20 +15,18 @@ declare(strict_types=1);
 namespace Dotclear\Plugin\topWriter;
 
 use dcCore;
-use dcNsProcess;
+use Dotclear\Core\Process;
 
-class Backend extends dcNsProcess
+class Backend extends Process
 {
     public static function init(): bool
     {
-        static::$init = defined('DC_CONTEXT_ADMIN');
-
-        return static::$init;
+        return self::status(My::checkContext(My::BACKEND));
     }
 
     public static function process(): bool
     {
-        if (!static::$init) {
+        if (!self::status()) {
             return false;
         }
 
diff --git a/src/BackendBehaviors.php b/src/BackendBehaviors.php
index 235e587..d2b4074 100644
--- a/src/BackendBehaviors.php
+++ b/src/BackendBehaviors.php
@@ -114,11 +114,6 @@ class BackendBehaviors
 
     public static function adminAfterDashboardOptionsUpdate(?string $user_id): void
     {
-        // nullsafe
-        if (is_null(dcCore::app()->auth) || is_null(dcCore::app()->auth->user_prefs)) {
-            return;
-        }
-
         dcCore::app()->auth->user_prefs->get('dashboard')->put(
             'topWriterPostsItems',
             !empty($_POST['topWriterPostsItems']),
@@ -154,11 +149,6 @@ class BackendBehaviors
 
     private static function setDefaultPref(): array
     {
-        // nullsafe
-        if (is_null(dcCore::app()->auth) || is_null(dcCore::app()->auth->user_prefs)) {
-            return [];
-        }
-
         if (!dcCore::app()->auth->user_prefs->get('dashboard')->prefExists('topWriterPostsItems')) {
             dcCore::app()->auth->user_prefs->get('dashboard')->put(
                 'topWriterPostsItems',
diff --git a/src/Frontend.php b/src/Frontend.php
index 6e10052..2a64b6b 100644
--- a/src/Frontend.php
+++ b/src/Frontend.php
@@ -15,20 +15,18 @@ declare(strict_types=1);
 namespace Dotclear\Plugin\topWriter;
 
 use dcCore;
-use dcNsProcess;
+use Dotclear\Core\Process;
 
-class Frontend extends dcNsProcess
+class Frontend extends Process
 {
     public static function init(): bool
     {
-        static::$init = true;
-
-        return static::$init;
+        return self::status(My::checkContext(My::FRONTEND));
     }
 
     public static function process(): bool
     {
-        if (!static::$init) {
+        if (!self::status()) {
             return false;
         }
 
diff --git a/src/My.php b/src/My.php
new file mode 100644
index 0000000..f1ae0e5
--- /dev/null
+++ b/src/My.php
@@ -0,0 +1,21 @@
+<?php
+/**
+ * @brief topWriter, a plugin for Dotclear 2
+ *
+ * @package Dotclear
+ * @subpackage Plugin
+ *
+ * @author Jean-Christian Denis, Pierre Van Glabeke
+ *
+ * @copyright Jean-Christian Denis
+ * @copyright GPL-2.0 https://www.gnu.org/licenses/gpl-2.0.html
+ */
+declare(strict_types=1);
+
+namespace Dotclear\Plugin\topWriter;
+
+use Dotclear\Module\MyPlugin;
+
+class My extends MyPlugin
+{
+}