diff --git a/docs/design.rst b/docs/design.rst
index 0c379c38..613a0e11 100644
--- a/docs/design.rst
+++ b/docs/design.rst
@@ -13,4 +13,5 @@ Design Deep Dive
 
     design/directories
     design/quantity
+    design/quantity_kind
     design/downcasting
diff --git a/docs/design/quantity_kind.rst b/docs/design/quantity_kind.rst
index 78505d1d..2ba41356 100644
--- a/docs/design/quantity_kind.rst
+++ b/docs/design/quantity_kind.rst
@@ -10,7 +10,7 @@ Kinds
 
 The first template parameter of ``quantity_kind`` is a ``Kind``.
 
-``Kind``s, by themselves:
+``Kind`` s, by themselves:
 
     * Wrap a ``Dimension``, and
     * opt into the downcasting facility.
@@ -34,7 +34,7 @@ Quantity kinds
 
 ``quantity_kind`` wraps a ``quantity`` and layers over its dimensional analysis.
 While all properties of the ``quantity`` apply transparently,
-results are always ``quantity_kind``s related to the kind(s) of the argument(s).
+results are always ``quantity_kind`` s related to the kind(s) of the argument(s).
 
 One of the arguments to the dimensional analysis operators can also be ``Quantity``.