diff --git a/src/Controllers/DesignController.php b/src/Controllers/DesignController.php
index 899f1f35..9ec47b5c 100644
--- a/src/Controllers/DesignController.php
+++ b/src/Controllers/DesignController.php
@@ -29,11 +29,9 @@ class DesignController extends BaseController
     /**
      * Show the design overview page
      *
-     * @param Request $request
-     *
      * @return Response
      */
-    public function index(Request $request)
+    public function index()
     {
         $demoUser = (new User())->forceFill([
             'id'   => 42,
@@ -53,21 +51,12 @@ class DesignController extends BaseController
         ]));
 
         $themes = $this->config->get('themes');
-
         $data = [
             'demo_user'   => $demoUser,
             'demo_user_2' => $demoUser2,
             'themes'      => $themes,
         ];
 
-        $themeId = $request->get('theme');
-        $this->config->set('theme', (int) $themeId);
-
-        if (isset($themes[$themeId])) {
-            $data['theme'] = $themes[$themeId];
-            $data['themeId'] = $themeId;
-        }
-
         return $this->response->withView(
             'pages/design',
             $data
diff --git a/src/Renderer/Twig/Extensions/Globals.php b/src/Renderer/Twig/Extensions/Globals.php
index 2b782557..862b892d 100644
--- a/src/Renderer/Twig/Extensions/Globals.php
+++ b/src/Renderer/Twig/Extensions/Globals.php
@@ -33,6 +33,7 @@ class Globals extends TwigExtension implements GlobalsInterface
     public function getGlobals(): array
     {
         $user = $this->auth->user();
+        $themes = config('themes');
 
         if ($user === null) {
             $themeId = config('theme');
@@ -40,13 +41,18 @@ class Globals extends TwigExtension implements GlobalsInterface
             $themeId = $user->settings->theme;
         }
 
-        $theme = config('themes')[$themeId];
+        $query = $this->request->query->get('theme');
+        if (!is_null($query) && isset($themes[$query])) {
+            $themeId = $query;
+        }
+
+        $theme = $themes[$themeId];
 
         return [
-            'user'       => $user ?? [],
-            'request'    => $this->request,
-            'themeId'      => $themeId,
-            'theme'      => $theme,
+            'user'    => $user ?? [],
+            'request' => $this->request,
+            'themeId' => $themeId,
+            'theme'   => $theme,
         ];
     }
 }
diff --git a/tests/Unit/Controllers/DesignControllerTest.php b/tests/Unit/Controllers/DesignControllerTest.php
index ac697584..4e60f793 100644
--- a/tests/Unit/Controllers/DesignControllerTest.php
+++ b/tests/Unit/Controllers/DesignControllerTest.php
@@ -4,7 +4,6 @@ namespace Engelsystem\Test\Unit\Controllers;
 
 use Engelsystem\Config\Config;
 use Engelsystem\Controllers\DesignController;
-use Engelsystem\Http\Request;
 use Engelsystem\Http\Response;
 use Engelsystem\Test\Unit\TestCase;
 use PHPUnit\Framework\MockObject\MockObject;
@@ -22,37 +21,18 @@ class DesignControllerTest extends TestCase
         $response->expects($this->once())
             ->method('withView')
             ->with('pages/design')
-            ->willReturn($response);
-        $request = new Request(['theme' => 42]);
-        $config = new Config();
-
-        $controller = new DesignController($response, $config);
-        $return = $controller->index($request);
-
-        $this->assertEquals($response, $return);
-    }
-
-    /**
-     * @covers \Engelsystem\Controllers\DesignController::index
-     */
-    public function testIndexSetTheme()
-    {
-        $theme = ['name' => 'Meaning of Live'];
-        /** @var Response|MockObject $response */
-        $response = $this->createMock(Response::class);
-        $response->expects($this->once())
-            ->method('withView')
-            ->willReturnCallback(function (string $view, array $data) use ($response, $theme) {
-                $this->assertTrue(isset($data['theme']));
-                $this->assertEquals($theme, $data['theme']);
+            ->willReturnCallback(function (string $view, array $data) use ($response) {
+                $this->assertTrue(isset($data['demo_user']));
+                $this->assertTrue(isset($data['demo_user_2']));
+                $this->assertIsArray($data['themes']);
 
                 return $response;
             });
-        $request = new Request();
-        $request->attributes->set('theme', '42');
-        $config = new Config(['themes' => [42 => $theme]]);
+        $config = new Config(['themes' => [42 => ['name' => 'Foo']]]);
 
         $controller = new DesignController($response, $config);
-        $controller->index($request);
+        $return = $controller->index();
+
+        $this->assertEquals($response, $return);
     }
 }
diff --git a/tests/Unit/Renderer/Twig/Extensions/GlobalsTest.php b/tests/Unit/Renderer/Twig/Extensions/GlobalsTest.php
index fff7a1c7..62e3b2b4 100644
--- a/tests/Unit/Renderer/Twig/Extensions/GlobalsTest.php
+++ b/tests/Unit/Renderer/Twig/Extensions/GlobalsTest.php
@@ -25,19 +25,20 @@ class GlobalsTest extends ExtensionTest
 
         /** @var Authenticator|MockObject $auth */
         $auth = $this->createMock(Authenticator::class);
-        /** @var Request|MockObject $request */
-        $request = $this->createMock(Request::class);
+        $request = new Request();
         $theme = ['name' => 'Testtheme', 'navbar_classes' => 'something'];
         $theme2 = ['name' => 'Bar'];
+        $theme3 = ['name' => 'Lorem'];
         $user = new User(['name' => '', 'email' => '', 'password' => '', 'api_key' => '']);
         $userSettings = new Settings(['theme' => 42, 'language' => '']);
-        $config = new Config(['theme' => 23, 'themes' => [42 => $theme, 23 => $theme2]]);
+        $config = new Config(['theme' => 23, 'themes' => [42 => $theme, 23 => $theme2, 1337 => $theme3]]);
 
-        $auth->expects($this->exactly(2))
+        $auth->expects($this->exactly(3))
             ->method('user')
             ->willReturnOnConsecutiveCalls(
                 null,
-                $user
+                $user,
+                null
             );
 
         $user->save();
@@ -60,5 +61,11 @@ class GlobalsTest extends ExtensionTest
         $this->assertGlobalsExists('user', $user, $globals);
         $this->assertGlobalsExists('themeId', 42, $globals);
         $this->assertGlobalsExists('theme', $theme, $globals);
+
+        $request->query->set('theme', 1337);
+        $globals = $extension->getGlobals();
+        $this->assertGlobalsExists('user', [], $globals);
+        $this->assertGlobalsExists('themeId', 1337, $globals);
+        $this->assertGlobalsExists('theme', $theme3, $globals);
     }
 }