1 files changed, 4 insertions, 2 deletions
diff --git a/tests/hazmat/primitives/test_ciphers.py b/tests/hazmat/primitives/test_ciphers.py
index 827b3b90..9f8123eb 100644
--- a/tests/hazmat/primitives/test_ciphers.py
+++ b/tests/hazmat/primitives/test_ciphers.py
@@ -17,13 +17,15 @@ import binascii
 
 import pytest
 
-from cryptography.exceptions import UnsupportedAlgorithm
+from cryptography.exceptions import _Reasons
 from cryptography.hazmat.primitives import ciphers
 from cryptography.hazmat.primitives.ciphers.algorithms import (
     AES, ARC4, Blowfish, CAST5, Camellia, IDEA, TripleDES
 )
 from cryptography.hazmat.primitives.ciphers.modes import ECB
 
+from ...utils import raises_unsupported_algorithm
+
 
 class TestAES(object):
     @pytest.mark.parametrize(("key", "keysize"), [
@@ -128,5 +130,5 @@ class TestIDEA(object):
 def test_invalid_backend():
     pretend_backend = object()
 
-    with pytest.raises(UnsupportedAlgorithm):
+    with raises_unsupported_algorithm(_Reasons.BACKEND_MISSING_INTERFACE):
         ciphers.Cipher(AES(b"AAAAAAAAAAAAAAAA"), ECB, pretend_backend)