diff --git a/src/fellchensammlung/templates/fellchensammlung/header.html b/src/fellchensammlung/templates/fellchensammlung/header.html
index ef31819..afd3185 100644
--- a/src/fellchensammlung/templates/fellchensammlung/header.html
+++ b/src/fellchensammlung/templates/fellchensammlung/header.html
@@ -4,12 +4,12 @@
 
 <nav class="navbar" role="navigation" aria-label="main navigation">
     <div class="navbar-brand">
-        <a class="navbar-item" tabindex="1" href="{% url 'index' %}">
+        <a class="navbar-item" tabindex="0" href="{% url 'index' %}">
             <img src="{% static 'fellchensammlung/img/logo_transparent.png' %}" alt="{% trans 'Notfellchen Logo' %}">
             <h1 class="title is-4">notfellchen.org</h1>
         </a>
 
-        <a role="button" class="navbar-burger" aria-label="{% trans 'Hauptmenü' %}"  tabindex="2" aria-expanded="false" data-target="navbarBasicExample">
+        <a role="button" class="navbar-burger" aria-label="{% trans 'Hauptmenü' %}"  tabindex="0" aria-expanded="false" data-target="navbarBasicExample">
             <span aria-hidden="true"></span>
             <span aria-hidden="true"></span>
             <span aria-hidden="true"></span>