document how to build w/ custom openssl on windows
diff --git a/docs/index.rst b/docs/index.rst
index a1cebc3..255c9e9 100644
--- a/docs/index.rst
+++ b/docs/index.rst
@@ -17,7 +17,8 @@
.. note::
If you're on Windows you'll need to make sure you have OpenSSL installed.
- There are `pre-compiled binaries`_ available.
+ There are `pre-compiled binaries`_ available. If your installation is in
+ an unusual location ``set LIB=C:\OpenSSL-x.y.z\lib;%LIB%`` before installing.
Why a new crypto library for Python?