diff --git a/doc/manual/introduction.xml b/doc/manual/introduction.xml
index 5641d110ba..21b1df1564 100644
--- a/doc/manual/introduction.xml
+++ b/doc/manual/introduction.xml
@@ -225,7 +225,7 @@ href="docs/papers.html#servicecm">SCM-12 paper</a>.</para>
 <simplesect><title>Portability</title>
 
 <para>Nix should run on most Unix systems, including Linux, FreeBSD and
-Mac OS X.  It is also supported on Windows using Cygwin.</para>
+Mac OS X.<!-- It is also supported on Windows using Cygwin.--></para>
 
 </simplesect>