diff --git a/barbican/plugin/crypto/p11_crypto.py b/barbican/plugin/crypto/p11_crypto.py
index 46366a44b..58f5fc3f8 100644
--- a/barbican/plugin/crypto/p11_crypto.py
+++ b/barbican/plugin/crypto/p11_crypto.py
@@ -74,7 +74,7 @@ p11_crypto_plugin_opts = [
                default=100),
     cfg.StrOpt('encryption_mechanism',
                help=u._('Secret encryption mechanism'),
-               default='CKM_AES_CBC', deprecated_name='algorithm'),
+               default='CKM_AES_CBC'),
     cfg.StrOpt('hmac_key_type',
                help=u._('HMAC Key Type'),
                default='CKK_AES'),
diff --git a/releasenotes/notes/pkcs11-remove-alrogithm-5ffcccc5197b236a.yaml b/releasenotes/notes/pkcs11-remove-alrogithm-5ffcccc5197b236a.yaml
new file mode 100644
index 000000000..9536809bb
--- /dev/null
+++ b/releasenotes/notes/pkcs11-remove-alrogithm-5ffcccc5197b236a.yaml
@@ -0,0 +1,6 @@
+---
+upgrade:
+  - |
+    The ``[p11_crypto_plugin] algorithm`` option, which is effectively
+    a deprecated alias of the ``[p11_crypto_plugin] encryption_mechanism``
+    option, has been removed.