--- a/tools/make_gpsbabel_html.sh
+++ b/tools/make_gpsbabel_html.sh
@@ -10,6 +10,7 @@ xsltproc \
   --stringparam html.cleanup "1" \
   --stringparam make.clean.html "1" \
   --stringparam html.valid.html "1" \
-  --stringparam html.stylesheet "https://www.gpsbabel.org/style3.css" \
+  --stringparam html.stylesheet "gpsbabel.org-style3.css" \
+  --nonet \
   http://docbook.sourceforge.net/release/xsl-ns/current/xhtml/docbook.xsl \
   xmldoc/readme.xml