diff --git a/doc/docbook/styles/html/acegi-chunk.xsl b/doc/docbook/styles/xhtml/acegi-chunk.xsl
similarity index 100%
rename from doc/docbook/styles/html/acegi-chunk.xsl
rename to doc/docbook/styles/xhtml/acegi-chunk.xsl
diff --git a/doc/docbook/styles/html/acegi.css b/doc/docbook/styles/xhtml/acegi.css
similarity index 100%
rename from doc/docbook/styles/html/acegi.css
rename to doc/docbook/styles/xhtml/acegi.css
diff --git a/doc/docbook/styles/html/acegi.xsl b/doc/docbook/styles/xhtml/acegi.xsl
similarity index 100%
rename from doc/docbook/styles/html/acegi.xsl
rename to doc/docbook/styles/xhtml/acegi.xsl
diff --git a/doc/project.properties b/doc/project.properties
index e95b3e7eda..cbdd341a44 100644
--- a/doc/project.properties
+++ b/doc/project.properties
@@ -1,8 +1,8 @@
 # sdocbook
 maven.sdocbook.src.dir=${basedir}/docbook
-maven.sdocbook.html.xsl=${maven.sdocbook.stylesheets.dir}/html/acegi.xsl
+maven.sdocbook.html.xsl=${maven.sdocbook.stylesheets.dir}/xhtml/acegi.xsl
 maven.sdocbook.fo.xsl=${maven.sdocbook.stylesheets.dir}/fo/acegi.xsl
-maven.sdocbook.htmlchunk.xsl=${maven.sdocbook.stylesheets.dir}/html/acegi-chunk.xsl
+maven.sdocbook.htmlchunk.xsl=${maven.sdocbook.stylesheets.dir}/xhtml/acegi-chunk.xsl
 
 # statcvs, if you want a full, accurate history
 # (this downloads the *entire* CVS into target/statcvs, so it can take some time)