diff --git a/footer.php b/footer.php
index 985d203..ac7bdf7 100644
--- a/footer.php
+++ b/footer.php
@@ -92,9 +92,9 @@
             <a title="Porte Aperte sul Web" href="http://www.porteapertesulweb.it/"> <img src="<?php echo get_template_directory_uri() . '/images/logopab.png'; ?>" width="180" alt="logo porte aperte sul web"/></a>
 
         <br/><small> Versione 2015.<?php echo get_option('pasw2015_version') . version_child(); ?><br/>
-        Proudly powered by <a href="http://wordpress.org" title="Piattaforma CMS WordPress">WordPress</a> &bull;
-        <a href="http://validator.w3.org/check/referer" title="HTML5 valido"><abbr title="HyperText Markup Language">HTML5</abbr></a> &bull;
-        <a href="http://jigsaw.w3.org/css-validator/check/referer" title="CSS valido"><abbr title="Cascading Style Sheets">CSS</abbr></a>
+        Proudly powered by <a href="https://wordpress.org" title="Piattaforma CMS WordPress">WordPress</a> &bull;
+        <a href="https://validator.w3.org/check/referer" title="HTML5 valido"><abbr title="HyperText Markup Language">HTML5</abbr></a> &bull;
+        <a href="https://jigsaw.w3.org/css-validator/check/referer" title="CSS valido"><abbr title="Cascading Style Sheets">CSS</abbr></a>
         </small>
             </p>
         </div>