diff --git a/source/openstack_block_storage.rst b/source/openstack_block_storage.rst
index 0efd01ea..c3774a0c 100644
--- a/source/openstack_block_storage.rst
+++ b/source/openstack_block_storage.rst
@@ -440,7 +440,7 @@ Restart the Block Storage volume service including its dependencies:
 Configuring a compute node to use Block Storage
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
-Perform the following steps to enable a compute code to work with block
+Perform the following steps to enable a compute node to work with block
 storage:
 
 .. code:: text
diff --git a/source/openstack_use_cases.rst b/source/openstack_use_cases.rst
index 132d3294..f0d4feea 100644
--- a/source/openstack_use_cases.rst
+++ b/source/openstack_use_cases.rst
@@ -29,4 +29,8 @@ presents an example architecture of MVP:
 
 .. image:: images\openstack_example_architecture.jpg
     :align: center
-    :alt: sample OpenStack* architecture
\ No newline at end of file
+    :alt: sample OpenStack* architecture
+
+*Note:* Optional Services (Cinder) and OpenStack Dashboard (Horizon) are
+not part of the OpenStack MVP.
+