diff --git a/fail2ban/tests/filtertestcase.py b/fail2ban/tests/filtertestcase.py
index 62eb0f21..b8e0e04a 100644
--- a/fail2ban/tests/filtertestcase.py
+++ b/fail2ban/tests/filtertestcase.py
@@ -1872,10 +1872,10 @@ class DNSUtilsNetworkTests(unittest.TestCase):
 	def testIpToName(self):
 		unittest.F2B.SkipIfNoNetwork()
 		res = DNSUtils.ipToName('8.8.4.4')
-		self.assertEqual(res, 'google-public-dns-b.google.com')
+		self.assertTrue(res.endswith(('.google', '.google.com')))
 		# same as above, but with IPAddr:
 		res = DNSUtils.ipToName(IPAddr('8.8.4.4'))
-		self.assertEqual(res, 'google-public-dns-b.google.com')
+		self.assertTrue(res.endswith(('.google', '.google.com')))
 		# invalid ip (TEST-NET-1 according to RFC 5737)
 		res = DNSUtils.ipToName('192.0.2.0')
 		self.assertEqual(res, None)