diff --git a/Tests/Functional/Controller/TeaControllerTest.php b/Tests/Functional/Controller/TeaControllerTest.php
index ee54297..7b97a2d 100644
--- a/Tests/Functional/Controller/TeaControllerTest.php
+++ b/Tests/Functional/Controller/TeaControllerTest.php
@@ -72,7 +72,7 @@ final class TeaControllerTest extends FunctionalTestCase
         $request = new InternalRequest();
         $request = $request->withPageId(3);
         $request = $request->withQueryParameters([
-            "tx_tea_teashow[tea]" => 1
+            'tx_tea_teashow[tea]' => 1
         ]);
 
         $html = (string)$this->executeFrontendSubRequest($request)->getBody();