diff --git a/README.rst b/README.rst
index 2a3e8b4a..bdf802db 100644
--- a/README.rst
+++ b/README.rst
@@ -18,6 +18,9 @@ This is a prototype mobile-friendly sphinx_ theme I made for readthedocs.org_. I
 currently in development and includes some rtd variable checks that can be ignored
 if you're just trying to use it on your project outside of that site.
 
+**This repo also exists as a submodule within the readthedocs itself**, so please make your edits to
+the SASS files here, rather than the .css files on RTD.
+
 .. image:: screen_mobile.png
     :width: 100%