diff --git a/src/Backend.php b/src/Backend.php
index ada2845..bedd1e1 100644
--- a/src/Backend.php
+++ b/src/Backend.php
@@ -28,7 +28,9 @@ class Backend extends dcNsProcess
 {
     public static function init(): bool
     {
-        static::$init = defined('DC_CONTEXT_ADMIN');
+        static::$init = defined('DC_CONTEXT_ADMIN')
+            && dcCore::app()->auth?->isSuperAdmin()
+            && My::phpCompliant();
 
         return static::$init;
     }
diff --git a/src/Manage.php b/src/Manage.php
index ea6addc..2367e70 100644
--- a/src/Manage.php
+++ b/src/Manage.php
@@ -29,7 +29,9 @@ class Manage extends dcNsProcess
 {
     public static function init(): bool
     {
-        static::$init = defined('DC_CONTEXT_ADMIN') && dcCore::app()->auth->isSuperAdmin();
+        static::$init = defined('DC_CONTEXT_ADMIN')
+            && dcCore::app()->auth?->isSuperAdmin()
+            && My::phpCompliant();
 
         return static::$init;
     }
diff --git a/src/My.php b/src/My.php
index fb4b656..72e6510 100644
--- a/src/My.php
+++ b/src/My.php
@@ -18,6 +18,14 @@ use dcCore;
 
 class My
 {
+    /**
+     * @var string PHP min version
+     */
+    public const PHP_MIN = '8.1';
+
+    /**
+     * @var string Admin list ID
+     */
     public const BACKEND_LIST_ID = 'dcloglist';
 
     /**
@@ -35,4 +43,12 @@ class My
     {
         return __((string) dcCore::app()->plugins->moduleInfo(self::id(), 'name'));
     }
+
+    /**
+     * Check php version
+     */
+    public static function phpCompliant(): bool
+    {
+        return version_compare(phpversion(), self::PHP_MIN, '>=');
+    }
 }