diff --git a/_config.yml b/_config.yml
index 2b6a0f2..99fc5d6 100644
--- a/_config.yml
+++ b/_config.yml
@@ -1,9 +1,10 @@
 source:      ./
 destination: ./_site
 
-markdown:    maruku
+markdown:    kramdown
 
 server_port: 8080
 auto: true
 safe: true
 pygments: true
+
diff --git a/_layouts/default.html b/_layouts/default.html
index 8b956f7..dc6773e 100644
--- a/_layouts/default.html
+++ b/_layouts/default.html
@@ -8,6 +8,7 @@
         <link rel="stylesheet" href="/stylesheets/pygment_trac.css">
         <link rel="icon" href="/images/favicon.png">
         <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script>
+        <script type="text/javascript" src="http://cdn.mathjax.org/mathjax/latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML"> </script>
         <script src="/javascripts/respond.js"></script>
         <!--[if lt IE 9]>
         <script src="//html5shiv.googlecode.com/svn/trunk/html5.js"></script>
diff --git a/index.markdown b/index.markdown
index 6c107ff..8994346 100644
--- a/index.markdown
+++ b/index.markdown
@@ -3,7 +3,7 @@ title: Page personnelle de Gaspard Jankowiak
 layout: default
 ---
 
-FR|[EN](/index_en.html)
+FR\|[EN](/index_en.html)
 
 Je suis actuellement en troisième année de thèse, sous la direction de [Jean Dolbeault](http://www.ceremade.dauphine.fr/~dolbeaul),
 au sein du [Ceremade](http://www.ceremade.dauphine.fr/).
diff --git a/index_en.markdown b/index_en.markdown
index 86317f9..17e22cf 100644
--- a/index_en.markdown
+++ b/index_en.markdown
@@ -3,7 +3,7 @@ title: Gaspard Jankowiak's homepage
 layout: default
 ---
 
-[FR](/index.html)|EN
+[FR](/index.html)\|EN
 
 I am currently finishing my PhD under the supervision of [Jean Dolbeault](http://www.ceremade.dauphine.fr/~dolbeaul)
 within the [Ceremade](http://www.ceremade.dauphine.fr/).