diff --git a/share/xml/bibliography.xml b/share/xml/bibliography.xml
index a9ef59fb0d..1d656ee82c 100644
--- a/share/xml/bibliography.xml
+++ b/share/xml/bibliography.xml
@@ -878,7 +878,7 @@
   <biblioentry xml:id="biblio-bsdfamilytree">
     <biblioset relation="book">
       <citetitle pubwork="book">
-	<link xlink:href="http://svnweb.FreeBSD.org/base/head/share/misc/bsd-family-tree?view=co">
+	<link xlink:href="https://svnweb.FreeBSD.org/base/head/share/misc/bsd-family-tree?view=co">
           The BSD Family Tree</link></citetitle>
       <pubdate>1997</pubdate>
     </biblioset>