diff --git a/doc/source/configuration/block-storage/volume-encryption.rst b/doc/source/configuration/block-storage/volume-encryption.rst
index c0927a289ae..280e0f7a46c 100644
--- a/doc/source/configuration/block-storage/volume-encryption.rst
+++ b/doc/source/configuration/block-storage/volume-encryption.rst
@@ -23,7 +23,7 @@ Steps to update ``cinder-api`` servers:
 
      .. code-block:: ini
 
-        api_class = castellan.key_manager.barbican_key_manager.BarbicanKeyManager
+        backend = barbican
 
 #. Restart ``cinder-api``.
 
@@ -37,7 +37,7 @@ Update ``nova-compute`` servers:
    .. code-block:: ini
 
       [key_manager]
-      api_class = castellan.key_manager.barbican_key_manager.BarbicanKeyManager
+      backend = barbican
 
      .. note::
 
diff --git a/doc/source/configuration/tables/cinder-common.inc b/doc/source/configuration/tables/cinder-common.inc
index 26e20f2e2bc..29820d4ee26 100644
--- a/doc/source/configuration/tables/cinder-common.inc
+++ b/doc/source/configuration/tables/cinder-common.inc
@@ -156,7 +156,7 @@
      - (String) DEPRECATED: The path to respond to healtcheck requests on.
    * - **[key_manager]**
      -
-   * - ``backend`` = ``castellan.key_manager.barbican_key_manager.BarbicanKeyManager``
+   * - ``backend`` = ``barbican``
      - (String) The full class name of the key manager API class
    * - ``fixed_key`` = ``None``
      - (String) Fixed key returned by key manager, specified in hex