diff --git a/tests/End2End/End2EndTest.php b/tests/End2End/End2EndTest.php
index 7eef4ffd..b096fee7 100644
--- a/tests/End2End/End2EndTest.php
+++ b/tests/End2End/End2EndTest.php
@@ -89,6 +89,7 @@ public function testGet200WithSubrequest(): void
     public function testGet404(): void
     {
         $client = static::createClient(['debug' => false]);
+        $client->useHtml5Parser(false);
 
         try {
             $client->request('GET', '/missing-page');
@@ -112,6 +113,7 @@ public function testGet404(): void
     public function testGetBadRequest(): void
     {
         $client = static::createClient(['debug' => false]);
+        $client->useHtml5Parser(false);
 
         $client->request('GET', '/bad-request');
 
@@ -126,6 +128,7 @@ public function testGetBadRequest(): void
     public function testGet500(): void
     {
         $client = static::createClient();
+        $client->useHtml5Parser(false);
 
         try {
             $client->request('GET', '/exception');