diff --git a/modules/Install/Commands/CreateSuperadmin.php b/modules/Install/Commands/CreateSuperadmin.php
index 540c6cfc..f260ba3b 100644
--- a/modules/Install/Commands/CreateSuperadmin.php
+++ b/modules/Install/Commands/CreateSuperadmin.php
@@ -98,6 +98,11 @@ class CreateSuperadmin extends BaseCommand
         $user = new User($data);
         $userModel->save($user);
 
+        $user = $userModel->findById($userModel->getInsertID());
+
+        // set newly created user as most powerful instance group (superadmin)
+        $user->addGroup(setting('AuthGroups.mostPowerfulGroup'));
+
         $this->write('Super admin "' . $username . '" created', 'green');
     }