diff --git a/lemur/tests/test_dns_providers.py b/lemur/tests/test_dns_providers.py
index 83315be5..9b8fdb5a 100644
--- a/lemur/tests/test_dns_providers.py
+++ b/lemur/tests/test_dns_providers.py
@@ -13,7 +13,7 @@ class TestDNSProvider(unittest.TestCase):
         self.assertFalse(dnsutil.is_valid_domain('example-of-over-63-character-domain-label-length-limit-123456789.com'))
         self.assertTrue(dnsutil.is_valid_domain('_acme-chall.example.com'))
         self.assertFalse(dnsutil.is_valid_domain('e/xample.com'))
-        self.assertFalse(dnsutil.is_valid_domain('exam\ple.com'))
+        self.assertFalse(dnsutil.is_valid_domain('exam\\ple.com'))
         self.assertFalse(dnsutil.is_valid_domain('<example.com'))
         self.assertFalse(dnsutil.is_valid_domain('*.example.com'))
         self.assertFalse(dnsutil.is_valid_domain('-example.io'))