diff --git a/openslides/agenda/forms.py b/openslides/agenda/forms.py
index 783398765..00a48281e 100644
--- a/openslides/agenda/forms.py
+++ b/openslides/agenda/forms.py
@@ -21,7 +21,7 @@ from openslides.utils.person.forms import PersonFormField
 from .models import Item, Speaker
 
 
-class ItemForm(forms.ModelForm, CssClassMixin):
+class ItemForm(CssClassMixin, forms.ModelForm):
     """
     Form to create of update an item.
     """
@@ -40,7 +40,16 @@ class ItemForm(forms.ModelForm, CssClassMixin):
         exclude = ('closed', 'weight', 'related_sid')
 
 
-class ItemOrderForm(forms.Form, CssClassMixin):
+class RelatedItemForm(ItemForm):
+    """
+    Form to update an related item.
+    """
+    class Meta:
+        model = Item
+        exclude = ('closed', 'type', 'weight', 'related_sid', 'title', 'text')
+
+
+class ItemOrderForm(CssClassMixin, forms.Form):
     """
     Form to change the order of the items.
     """
diff --git a/openslides/agenda/models.py b/openslides/agenda/models.py
index 711d58639..8d347f381 100644
--- a/openslides/agenda/models.py
+++ b/openslides/agenda/models.py
@@ -114,19 +114,13 @@ class Item(MPTTModel, SlideMixin):
 
     def get_absolute_url(self, link='detail'):
         """
-        Return the URL to this item. By default it is the link to its
-        view or the view of a related object.
+        Return the URL to this item.
 
-        The link can be:
-        * detail or view
-        * update or edit
-        * delete
+        The link can be detail, update or delete.
         """
         if link == 'detail' or link == 'view':
             return reverse('item_view', args=[str(self.id)])
         if link == 'update' or link == 'edit':
-            if self.related_sid:
-                return self.get_related_slide().get_absolute_url(link)
             return reverse('item_edit', args=[str(self.id)])
         if link == 'delete':
             return reverse('item_delete', args=[str(self.id)])
diff --git a/openslides/agenda/templates/agenda/edit.html b/openslides/agenda/templates/agenda/edit.html
index 9d5a8065b..081caaed5 100644
--- a/openslides/agenda/templates/agenda/edit.html
+++ b/openslides/agenda/templates/agenda/edit.html
@@ -1,6 +1,7 @@
 {% extends "base.html" %}
 
 {% load i18n %}
+{% load tags %}
 
 {% block title %}
     {% if item %}
@@ -22,6 +23,15 @@
         <a href="{% url 'item_overview' %}" class="btn btn-mini"><i class="icon-chevron-left"></i> {% trans "Back to overview" %}</a>
         </small>
     </h1>
+    <p>
+        {% if item.related_sid %}
+            <a href="{% model_url item.get_related_slide 'update' %}" class="btn btn-small">
+                {% blocktrans with type=item.get_related_type|trans name=item.get_related_slide %}
+                    Edit {{ type }} {{ name }}
+                {% endblocktrans %}
+            </a>
+        {% endif %}
+    </p>
     <form action="" method="post">{% csrf_token %}
         {% include "form.html" %}
         <p>
diff --git a/openslides/agenda/views.py b/openslides/agenda/views.py
index e839aaa47..cebeebbc7 100644
--- a/openslides/agenda/views.py
+++ b/openslides/agenda/views.py
@@ -32,7 +32,7 @@ from openslides.utils.utils import html_strong
 from openslides.projector.api import get_active_slide, get_slide_from_sid
 from openslides.projector.projector import Widget, SLIDE
 from .models import Item, Speaker
-from .forms import ItemOrderForm, ItemForm, AppendSpeakerForm
+from .forms import ItemOrderForm, ItemForm, AppendSpeakerForm, RelatedItemForm
 
 
 class Overview(TemplateView):
@@ -187,9 +187,14 @@ class ItemUpdate(UpdateView):
     template_name = 'agenda/edit.html'
     model = Item
     context_object_name = 'item'
-    form_class = ItemForm
     success_url_name = 'item_overview'
 
+    def get_form_class(self):
+        if self.object.related_sid is None:
+            return ItemForm
+        else:
+            return RelatedItemForm
+
 
 class ItemCreate(CreateView):
     """
diff --git a/openslides/utils/templatetags/tags.py b/openslides/utils/templatetags/tags.py
index cb814067a..8592696ef 100644
--- a/openslides/utils/templatetags/tags.py
+++ b/openslides/utils/templatetags/tags.py
@@ -11,6 +11,7 @@
 """
 
 from django import template
+from django.utils.translation import ugettext as _
 from openslides.config.api import config
 
 
@@ -27,6 +28,11 @@ def get_config(key):
     return config[key]
 
 
+@register.filter
+def trans(value):
+    return _(value)
+
+
 @register.simple_tag
 def model_url(object, link='view'):
     # TODO: Rename to object_url