diff --git a/docs/development/submitting-patches.rst b/docs/development/submitting-patches.rst
index ff650c4..810b874 100644
--- a/docs/development/submitting-patches.rst
+++ b/docs/development/submitting-patches.rst
@@ -25,6 +25,9 @@
 
 `Write comments as complete sentences.`_
 
+Class names which contains acronyms or initialisms should always be
+capitalized. A class should be named ``HTTPClient``, not ``HttpClient``.
+
 Every code file must start with the boilerplate licensing notice:
 
 .. code-block:: python