Pypy is not a real word either apparently.
diff --git a/docs/installation.rst b/docs/installation.rst
index f2b4089..9d8916e 100644
--- a/docs/installation.rst
+++ b/docs/installation.rst
@@ -26,7 +26,7 @@
----------------------------------
``cryptography`` should build very easily on GNU/Linux provided you have a C
-compiler, headers for Python (if you're not using Pypy), and headers for the
+compiler, headers for Python (if you're not using `pypy`), and headers for the
OpenSSL and `libffi` libraries available on your system.
Debian and Ubuntu systems