diff --git a/tests/DatatablesAvailabilityTest.php b/tests/DatatablesAvailabilityTest.php
index 2ef73de1..057b22c0 100644
--- a/tests/DatatablesAvailabilityTest.php
+++ b/tests/DatatablesAvailabilityTest.php
@@ -40,10 +40,16 @@ class DatatablesAvailabilityTest extends WebTestCase
             'PHP_AUTH_USER' => 'admin',
             'PHP_AUTH_PW' => 'test',
         ]);
-
+        $client->catchExceptions(false);
         $client->request('GET', $url);
         $this->assertTrue($client->getResponse()->isSuccessful(), 'Request not successful. Status code is '.$client->getResponse()->getStatusCode());
 
+        static::ensureKernelShutdown();
+        $client = static::createClient([], [
+            'PHP_AUTH_USER' => 'admin',
+            'PHP_AUTH_PW' => 'test',
+        ]);
+        $client->catchExceptions(false);
         $client->request('POST', $url, ['_dt' => 'dt']);
         $this->assertTrue($client->getResponse()->isSuccessful());
         $this->assertJson($client->getResponse()->getContent());