diff --git a/_config.yml b/_config.yml
index e20b786..14cc415 100644
--- a/_config.yml
+++ b/_config.yml
@@ -35,8 +35,8 @@ defaults:
         scope:
             path: "de"
         values:
-            page_title: "Gaspard Jankowiak's homepage"
-            title: "Gaspard Jankowiak's homepage"
-            subtitle: "Research fellow at the University of Constance<div id='main_email'><span>gaspard</span><span></span>@<span>math.janko.fr</span></div>"
-            homelink: "/de/lehre"
+            page_title: "Homepage von Gaspard Jankowiak"
+            title: "Homepage von Gaspard Jankowiak"
+            subtitle: ""
+            homelink: "/de"
             fr_url: ""
diff --git a/_includes/nav_de.html b/_includes/nav_de.html
index 1da06d2..dc27ee4 100644
--- a/_includes/nav_de.html
+++ b/_includes/nav_de.html
@@ -1,5 +1,5 @@
 <nav>
 <ul>
-<li><a href="/de/lehre"></a></li>
+  <a href="/de">Lehre</a>
 </ul>
 </nav>
diff --git a/_layouts/default.html b/_layouts/default.html
index 99e7873..ca01858 100644
--- a/_layouts/default.html
+++ b/_layouts/default.html
@@ -50,7 +50,7 @@
                 {% if page.lang == 'en' %}
                       <a href="{{ page.url | remove_first: '/en' }}">🇫🇷</a>
 
-                      <a href="/de/lehre">🇩🇪</a>
+                      <a href="/de">🇩🇪</a>
                     </p>
                     {% include nav_en.html %}
                 {% else %}
@@ -66,7 +66,7 @@
                         <a href="{{ page.en_url }}">🇬🇧</a>
                     {% endif %}
 
-                     <a href="/de/lehre">🇩🇪</a>
+                     <a href="/de">🇩🇪</a>
                      </p>
                     {% include nav_fr.html %}
                 {% endif %}
diff --git a/de/index.markdown b/de/index.markdown
new file mode 100644
index 0000000..9efa060
--- /dev/null
+++ b/de/index.markdown
@@ -0,0 +1,31 @@
+---
+layout: default
+math: false
+lang: de
+---
+
+# Lehre
+
+## 2021-2022
+
+### Theorie und Numerik PDGs
+
+- [Blatt 1](/de/uebungen/2021/PDG/blatt_1.pdf)
+
+### GDG mit geometrischen Anwendungen
+
+# Kontakt
+
+Gaspard Jankowiak  
+**@** <span>gaspard</span><span></span>@<span>math.janko.fr</span>  
+**@** <span>gaspard.jankowiak</span><span></span>@<span>uni-konstanz.de</span>  
+[ORCiD](https://orcid.org/0000-0002-9025-1465)
+{: .float-left}
+
+Büro F402  
+Fachbereich Mathematik und Statistik  
+Universität Konstanz  
+78457 Konstanz
+{: .float-right}
+
+{: .float-right}
diff --git a/de/lehre.markdown b/de/lehre.markdown
deleted file mode 100644
index 0c56060..0000000
--- a/de/lehre.markdown
+++ /dev/null
@@ -1,12 +0,0 @@
----
-layout: default
-subtitle: Lehre
-math: true
-lang: de
----
-
-# Theorie u. Numerik PDG
-
-## Übungen
-
-- [Blatt 1](/de/uebungen/2021/PDG/blatt_1.pdf)
diff --git a/de/uebungen/2021/PDG/blatt_1.pdf b/de/uebungen/2021/PDG/blatt_1.pdf
index 1321b41..42f0a20 100644
Binary files a/de/uebungen/2021/PDG/blatt_1.pdf and b/de/uebungen/2021/PDG/blatt_1.pdf differ
diff --git a/en/index.markdown b/en/index.markdown
index 6083e19..0663c42 100644
--- a/en/index.markdown
+++ b/en/index.markdown
@@ -59,6 +59,7 @@ Applieds PDEs for Life Sciences &ndash; Barcelona
 # Contact
 Gaspard Jankowiak  
 **@** <span>gaspard</span><span></span>@<span>math.janko.fr</span>  
+**@** <span>gaspard.jankowiak</span><span></span>@<span>uni-konstanz.de</span>  
 [ORCiD](https://orcid.org/0000-0002-9025-1465)
 {: .float-left}
 
diff --git a/index.markdown b/index.markdown
index d7e171b..43ca4f3 100644
--- a/index.markdown
+++ b/index.markdown
@@ -60,6 +60,7 @@ Préparée sous la direction de <a href="{{authors['jd'].home}}">{{authors['jd']
 
 Gaspard Jankowiak  
 **@** <span>gaspard</span><span></span>@<span>math.janko.fr</span>  
+**@** <span>gaspard.jankowiak</span><span></span>@<span>uni-konstanz.de</span>  
 [ORCiD](https://orcid.org/0000-0002-9025-1465)
 {: .float-left}