diff --git a/tests/Api/DAV/CardDAVTest.php b/tests/Api/DAV/CardDAVTest.php
index abac704d58f..c46f4f54620 100644
--- a/tests/Api/DAV/CardDAVTest.php
+++ b/tests/Api/DAV/CardDAVTest.php
@@ -440,7 +440,7 @@ public function test_carddav_sync_collection_deleted_contact()
             ->get()
             ->last();
 
-        $response->assertSee("<d:multistatus xmlns:d=\"DAV:\" xmlns:s=\"http://sabredav.org/ns\" xmlns:card=\"urn:ietf:params:xml:ns:carddav\">
+        $response->assertSee("<d:multistatus xmlns:d=\"DAV:\" xmlns:s=\"http://sabredav.org/ns\" xmlns:card=\"urn:ietf:params:xml:ns:carddav\" xmlns:cal=\"urn:ietf:params:xml:ns:caldav\" xmlns:cs=\"http://calendarserver.org/ns/\">
  <d:response>
   <d:href>/dav/addressbooks/{$user->email}/contacts/{$contact->uuid}.vcf</d:href>
   <d:status>HTTP/1.1 404 Not Found</d:status>