diff --git a/en_US.ISO8859-1/htdocs/4xx.xml b/en_US.ISO8859-1/htdocs/4xx.xml
index 821c7598b6..57156d64ca 100644
--- a/en_US.ISO8859-1/htdocs/4xx.xml
+++ b/en_US.ISO8859-1/htdocs/4xx.xml
@@ -9,6 +9,8 @@
     <title>&title;</title>
 
     <cvs:keyword xmlns:cvs="http://www.FreeBSD.org/XML/CVS">$FreeBSD$</cvs:keyword>
+
+    <base href="/" />
   </head>
 
   <body class="navinclude.about">
diff --git a/share/xml/xhtml.xsl b/share/xml/xhtml.xsl
index 2175e250b8..5f703888c6 100644
--- a/share/xml/xhtml.xsl
+++ b/share/xml/xhtml.xsl
@@ -37,6 +37,7 @@
     <html xmlns="http://www.w3.org/1999/xhtml">
       <head>
 	<title><xsl:value-of select="$title" /></title>
+	<xsl:copy-of select="/xhtml:html/xhtml:head/xhtml:base" />
 	<meta http-equiv="Content-Type" content="text/html; charset=&xml.encoding;" />
 	<meta name="MSSmartTagsPreventParsing" content="TRUE" />
 	<xsl:copy-of select="/xhtml:html/xhtml:head/xhtml:meta"/>
