diff --git a/_config.yml b/_config.yml
index cd5041a..4823077 100644
--- a/_config.yml
+++ b/_config.yml
@@ -12,5 +12,7 @@ style: light
 
 title: 'Gaspard Jankowiak · Ceremade · Université Paris Dauphine'
 header-title: 'Page personnelle de Gaspard Jankowiak'
-header-subtitle: 'Thésard au Ceremade — Université Paris Dauphine'
+header-subtitle: 'Thésard au Ceremade &middot; Université Paris Dauphine<br>jankowiak@ceremade.dauphine.fr'
 header-homelink: '/'
+
+pretty: permalinks
diff --git a/_layouts/default.html b/_layouts/default.html
index 74c5bde..f65228d 100644
--- a/_layouts/default.html
+++ b/_layouts/default.html
@@ -62,6 +62,7 @@
 
                 {{ content }}
                 <hr>
+                <span class="credits left"><a href="http://validator.w3.org/check?uri=http%3A%2F%2Fgjankowiak.github.com{{ page.url | cgi_escape }}">Validate</a> HTML</span>
                 <span class="credits right">Hosted on GitHub Pages &mdash; Theme derived from <a href="http://twitter.com/#!/michigangraham">mattgraham</a> &mdash;
                 Powered by <a href="http://jekyllrb.com/">Jekyll</a>
                 </span>
diff --git a/en.markdown b/en.markdown
index 1d07c31..a03b41b 100644
--- a/en.markdown
+++ b/en.markdown
@@ -1,7 +1,7 @@
 ---
 layout: default
 header-title: Gaspard Jankowiak's homepage
-header-subtitle: PhD student at Ceremade &mdash; Université Paris Dauphine
+header-subtitle: PhD student at Ceremade &middot; Université Paris Dauphine<br> jankowiak@ceremade.dauphine.fr
 header-homelink: /en
 ---
 
@@ -9,8 +9,8 @@ header-homelink: /en
 {: .switcher}
 <nav>
 <ul>
-<li><a href="#research">Research</a></li> |
-<li><a href="#teaching-in-french">Teaching</a></li> |
+<li><a href="#research">Research</a> |</li>
+<li><a href="#teaching-in-french">Teaching</a> |</li>
 <li><a href="#contact">Contact</a></li>
 </ul>
 </nav>