diff --git a/openslides/participant/templates/participant/base_participant.html b/openslides/participant/templates/participant/base_participant.html
index a0f318179..751c02a3a 100644
--- a/openslides/participant/templates/participant/base_participant.html
+++ b/openslides/participant/templates/participant/base_participant.html
@@ -66,7 +66,7 @@
             </li>
 
             {# delete group #}
-            {% if group.name != 'Anonymous' %}
+            {% if group.name|lower != 'anonymous' and group.name|lower != 'registered' %}
                 <li>
                     <a href="{% model_url group 'delete'  %}"><img src="{% static 'images/icons/delete.png' %}"> {% trans 'Delete group' %}</a>
                 </li>
diff --git a/openslides/participant/views.py b/openslides/participant/views.py
index c0fa8d6c5..34cb032a0 100644
--- a/openslides/participant/views.py
+++ b/openslides/participant/views.py
@@ -441,7 +441,7 @@ class GroupDeleteView(DeleteView):
     url = 'user_group_overview'
 
     def pre_redirect(self, request, *args, **kwargs):
-        if self.get_object().name.lower() == 'anonymous':
+        if self.get_object().name.lower() in ['anonymous', 'registered']:
             messages.error(request, _("You can not delete this Group."))
         else:
             super(GroupDeleteView, self).pre_redirect(request, *args, **kwargs)