diff --git a/Tests/Fixtures/response-functional/cookie_max_age.expected b/Tests/Fixtures/response-functional/cookie_max_age.expected
index 6870a2772..c4b31d4f3 100644
--- a/Tests/Fixtures/response-functional/cookie_max_age.expected
+++ b/Tests/Fixtures/response-functional/cookie_max_age.expected
@@ -6,6 +6,6 @@ Array
     [0] => Content-Type: text/plain; charset=utf-8
     [1] => Cache-Control: no-cache, private
     [2] => Date: Sat, 12 Nov 1955 20:04:00 GMT
-    [3] => Set-Cookie: foo=bar; expires=Sat, 01-Jan-10000 02:46:40 GMT; Max-Age=%d; path=/
+    [3] => Set-Cookie: foo=bar; expires=Sat, 01 Jan 10000 02:46:40 GMT; Max-Age=%d; path=/
 )
 shutdown
diff --git a/Tests/ResponseFunctionalTest.php b/Tests/ResponseFunctionalTest.php
index 471455d70..aa24291ed 100644
--- a/Tests/ResponseFunctionalTest.php
+++ b/Tests/ResponseFunctionalTest.php
@@ -48,6 +48,7 @@ public function testCookie($fixture)
         }
 
         $result = file_get_contents(sprintf('http://localhost:8054/%s.php', $fixture));
+        $result = preg_replace_callback('/expires=[^;]++/', function ($m) { return str_replace('-', ' ', $m[0]); }, $result);
         $this->assertStringMatchesFormatFile(__DIR__.sprintf('/Fixtures/response-functional/%s.expected', $fixture), $result);
     }