diff --git a/docs/writing/documentation.rst b/docs/writing/documentation.rst
index a325f02..8b5701f 100644
--- a/docs/writing/documentation.rst
+++ b/docs/writing/documentation.rst
@@ -158,7 +158,7 @@ Pycco_
 .. _Docco: http://jashkenas.github.com/docco
 
 Ronn_
-    Ronn builds UNIX manuals. It converts human readable textfiles to roff
+    Ronn builds Unix manuals. It converts human readable textfiles to roff
     for terminal display, and also to HTML for the web.
 
 .. _Ronn: https://github.com/rtomayko/ronn