--- a/bsc-projects-17.html	Fri Sep 15 11:00:12 2017 +0100
+++ b/bsc-projects-17.html	Fri Sep 15 11:01:14 2017 +0100
@@ -546,7 +546,7 @@
 
 <P>
 <!-- hhmts start --> Last modified: Mon May 16 11:27:14 BST 2016 <!-- hhmts end -->
-<a href="http://validator.w3.org/check/referer">[Validate this page.]</a>
+<a href="https://validator.w3.org/check/referer">[Validate this page.]</a>
 </P>
 </BODY>
 </HTML>