2 files changed, 4 insertions, 2 deletions
diff --git a/tests/hazmat/primitives/twofactor/test_hotp.py b/tests/hazmat/primitives/twofactor/test_hotp.py
index 803f96f3..92078e61 100644
--- a/tests/hazmat/primitives/twofactor/test_hotp.py
+++ b/tests/hazmat/primitives/twofactor/test_hotp.py
@@ -18,6 +18,7 @@ import os
 import pytest
 
 from cryptography.exceptions import InvalidToken, _Reasons
+from cryptography.hazmat.backends.interfaces import HMACBackend
 from cryptography.hazmat.primitives import hashes
 from cryptography.hazmat.primitives.hashes import MD5, SHA1
 from cryptography.hazmat.primitives.twofactor.hotp import HOTP
@@ -34,7 +35,7 @@ vectors = load_vectors_from_file(
     only_if=lambda backend: backend.hmac_supported(hashes.SHA1()),
     skip_message="Does not support HMAC-SHA1."
 )
-@pytest.mark.hmac
+@pytest.mark.requires_backend_interface(interface=HMACBackend)
 class TestHOTP(object):
     def test_invalid_key_length(self, backend):
         secret = os.urandom(10)
diff --git a/tests/hazmat/primitives/twofactor/test_totp.py b/tests/hazmat/primitives/twofactor/test_totp.py
index 518d3ce8..6ad70ae1 100644
--- a/tests/hazmat/primitives/twofactor/test_totp.py
+++ b/tests/hazmat/primitives/twofactor/test_totp.py
@@ -16,6 +16,7 @@ from __future__ import absolute_import, division, print_function
 import pytest
 
 from cryptography.exceptions import InvalidToken, _Reasons
+from cryptography.hazmat.backends.interfaces import HMACBackend
 from cryptography.hazmat.primitives import hashes
 from cryptography.hazmat.primitives.twofactor.totp import TOTP
 
@@ -27,7 +28,7 @@ vectors = load_vectors_from_file(
     "twofactor/rfc-6238.txt", load_nist_vectors)
 
 
-@pytest.mark.hmac
+@pytest.mark.requires_backend_interface(interface=HMACBackend)
 class TestTOTP(object):
     @pytest.mark.supported(
         only_if=lambda backend: backend.hmac_supported(hashes.SHA1()),