name things the right name for variety
diff --git a/tests/hazmat/primitives/test_cast5.py b/tests/hazmat/primitives/test_cast5.py
index c617b81..2111928 100644
--- a/tests/hazmat/primitives/test_cast5.py
+++ b/tests/hazmat/primitives/test_cast5.py
@@ -100,7 +100,7 @@
 )
 @pytest.mark.cipher
 class TestCAST5_CTR(object):
-    test_CFB = generate_encrypt_test(
+    test_CTR = generate_encrypt_test(
         load_nist_vectors,
         os.path.join("ciphers", "CAST5"),
         ["cast5-ctr.txt"],