diff --git a/application/controllers/MigrateController.php b/application/controllers/MigrateController.php
index b032efff..65643512 100644
--- a/application/controllers/MigrateController.php
+++ b/application/controllers/MigrateController.php
@@ -5,6 +5,7 @@
 namespace Icinga\Module\Icingadb\Controllers;
 
 use Exception;
+use GuzzleHttp\Psr7\ServerRequest;
 use Icinga\Exception\IcingaException;
 use Icinga\Module\Icingadb\Compat\UrlMigrator;
 use Icinga\Module\Icingadb\Forms\SetAsBackendForm;
@@ -68,23 +69,18 @@ class MigrateController extends Controller
     {
         $this->assertHttpMethod('get');
 
-        $this->getResponse()
-            ->setBody(IcingadbSupportHook::isIcingaDbSetAsPreferredBackend())
-            ->sendResponse();
-        exit;
+        $form = new SetAsBackendForm();
+        $form->setAction(Url::fromPath('icingadb/migrate/checkbox-submit')->getAbsoluteUrl());
+
+        $this->getDocument()->addHtml($form);
     }
 
     public function checkboxSubmitAction()
     {
         $this->assertHttpMethod('post');
+        $this->addPart(HtmlString::create('"bogus"'), 'Behavior:Migrate');
 
-        $form = (new SetAsBackendForm())
-            ->setOnSuccess(function () use (&$form) {
-                $this->addPart(HtmlString::create('"bogus"'), 'Behavior:Migrate');
-                $form->save($form->getElement('backend')->isChecked());
-                return false;
-            });
-        $form->handleRequest();
+        (new SetAsBackendForm())->handleRequest(ServerRequest::fromGlobals());
     }
 
     public function backendSupportAction()
diff --git a/application/forms/SetAsBackendForm.php b/application/forms/SetAsBackendForm.php
index 2c003138..28406335 100644
--- a/application/forms/SetAsBackendForm.php
+++ b/application/forms/SetAsBackendForm.php
@@ -4,20 +4,31 @@
 
 namespace Icinga\Module\Icingadb\Forms;
 
-class SetAsBackendForm extends SetAsBackendConfigForm
+use Icinga\Module\Icingadb\Hook\IcingadbSupportHook;
+use Icinga\Web\Session;
+use ipl\Web\Compat\CompatForm;
+
+class SetAsBackendForm extends CompatForm
 {
-    public function init()
+    protected $defaultAttributes = [
+        'id'    => 'setAsBackendForm',
+        'class' => 'icinga-controls'
+    ];
+
+    protected function assemble()
     {
-        $this->setName('IcingaModuleIcingadbFormsSetAsBackendForm');
-        $this->setTokenDisabled();
-        // If you change name here, please change in migration.js also.
+        $this->addElement('checkbox', 'backend', [
+            'class' => 'autosubmit',
+            'label' => t('Use Icinga DB As Backend'),
+            'value' => IcingadbSupportHook::isIcingaDbSetAsPreferredBackend()
+        ]);
     }
 
-    public function createElements(array $formData)
+    public function onSuccess()
     {
-        parent::createElements([]);
-
-        $this->removeElement('btn_submit');
-        $this->removeElement('btn_submit_session');
+        Session::getSession()->getNamespace('icingadb')->set(
+            IcingadbSupportHook::PREFERENCE_NAME,
+            $this->getElement('backend')->isChecked()
+        );
     }
 }
diff --git a/library/Icingadb/Hook/IcingadbSupportHook.php b/library/Icingadb/Hook/IcingadbSupportHook.php
index 5b84723b..cd43a5ac 100644
--- a/library/Icingadb/Hook/IcingadbSupportHook.php
+++ b/library/Icingadb/Hook/IcingadbSupportHook.php
@@ -5,15 +5,15 @@
 namespace Icinga\Module\Icingadb\Hook;
 
 use Icinga\Application\Icinga;
-use Icinga\Authentication\Auth;
 use Icinga\Module\Icingadb\Hook\Common\HookUtils;
+use Icinga\Web\Session;
 
 abstract class IcingadbSupportHook
 {
     use HookUtils;
 
     /** @var string key name of preference */
-    const PREFERENCE_NAME = 'icingadb_as_backend';
+    const PREFERENCE_NAME = 'icingadb.as_backend';
 
     /**
      * Return whether your module supports IcingaDB or not
@@ -32,14 +32,9 @@ abstract class IcingadbSupportHook
      */
     final public static function isIcingaDbSetAsPreferredBackend(): bool
     {
-        if ($user = Auth::getInstance()->getUser()) {
-            $webPreferences = $user->getPreferences()->get('icingaweb');
-            if (! empty($webPreferences) && array_key_exists(static::PREFERENCE_NAME, $webPreferences)) {
-                return (bool) $webPreferences[static::PREFERENCE_NAME];
-            }
-        }
-
-        return false;
+        return (bool) Session::getSession()
+            ->getNamespace('icingadb')
+            ->get(self::PREFERENCE_NAME, false);
     }
 
     /**
diff --git a/public/css/widget/migrate-popup.less b/public/css/widget/migrate-popup.less
index 65e9e9bb..f7adb22f 100644
--- a/public/css/widget/migrate-popup.less
+++ b/public/css/widget/migrate-popup.less
@@ -146,11 +146,11 @@
       margin-top: 0.5em;
       width: 100%;
 
-      .wrapper {
+      .control-group {
         display: flex;
         align-items: center;
 
-        .checkbox-label {
+        .control-label-group {
           margin-right: .5em;
         }
 
diff --git a/public/js/migrate.js b/public/js/migrate.js
index 101892db..4198e160 100644
--- a/public/js/migrate.js
+++ b/public/js/migrate.js
@@ -24,22 +24,6 @@
         '   <button type="button" value="0"><i class="icon-"></i></button>\n' +
         '</li>';
 
-    const BACKEND_FORM = '<form id="setAsBackendForm" name="IcingaModuleIcingadbFormsSetAsBackendForm" ' +
-        'class="icinga-form icinga-controls" method="post" action="icingadb/migrate/checkbox-submit" ' +
-        'data-base-target="migrate-popup-backend-submit-blackhole">\n' +
-        '   <div class="wrapper">\n' +
-        '      <div class="checkbox-label">\n' +
-        '         <span><label for="setAsBackendForm-checkbox">Use Icinga DB As Backend</label></span>\n' +
-        '      </div>\n' +
-        '      <input type="checkbox" name="backend" value="1" id="setAsBackendForm-checkbox" class="autosubmit sr-only">\n' +
-        '      <label for="setAsBackendForm-checkbox" aria-hidden="true" class="toggle-switch">\n' +
-        '         <span class="toggle-slider"></span>\n' +
-        '      </label>\n' +
-        '     </div>\n' +
-        '   <input type="hidden" name="formUID" value="IcingaModuleIcingadbFormsSetAsBackendForm" id="IcingaModuleIcingadbFormsSetAsBackendForm">\n' +
-        '   <div id="migrate-popup-backend-submit-blackhole"></div>\n' +
-        '</form>';
-
     /**
      * Icinga DB Migration behavior.
      *
@@ -370,29 +354,31 @@
         });
 
         if (Object.keys(supportedModules).length) {
-            let $form = this.Popup().find('.suggestion-area > #setAsBackendForm');
-            if (! $form.length) {
-                $form = $(BACKEND_FORM);
-                this.Popup().find('.suggestion-area > ul').after($form);
-            }
-
             this.backendSupportRelated = { ...this.backendSupportRelated, ...supportedModules };
 
             let req = $.ajax({
                 context : this,
                 type    : 'get',
-                url     : this.icinga.config.baseUrl + '/icingadb/migrate/checkbox-state'
+                url     : this.icinga.config.baseUrl + '/icingadb/migrate/checkbox-state?showCompact'
             });
 
             req.done(this.setCheckboxState);
         }
     };
 
-    Migrate.prototype.setCheckboxState = function(isChecked, textStatus, req) {
-        var $form = this.Popup().find('.suggestion-area > #setAsBackendForm');
-        var $checkbox = $form.find('input#setAsBackendForm-checkbox');
+    Migrate.prototype.setCheckboxState = function(html, textStatus, req) {
+        let $form = this.Popup().find('.suggestion-area > #setAsBackendForm');
+        if (! $form.length) {
+            $form = $(html);
+            $form.attr('data-base-target', 'migrate-popup-backend-submit-blackhole');
+            $form.append('<div id="migrate-popup-backend-submit-blackhole"></div>');
+
+            this.Popup().find('.suggestion-area > ul').after($form);
+        } else {
+            let $newForm = $(html);
+            $form.find('[name=backend]').prop('checked', $newForm.find('[name=backend]').is(':checked'));
+        }
 
-        $checkbox.prop('checked', isChecked);
         this.showPopup();
     }