diff --git a/openslides/core/templates/core/widget_customslide.html b/openslides/core/templates/core/widget_customslide.html
index e74678a78..a2ff73294 100644
--- a/openslides/core/templates/core/widget_customslide.html
+++ b/openslides/core/templates/core/widget_customslide.html
@@ -10,7 +10,7 @@
             rel="tooltip" data-original-title="{% trans 'Show' %}">
             <i class="icon-facetime-video {% if welcomepage_is_active %}icon-white{% endif %}"></i>
         </a>&nbsp;
-        <a href="{% url 'projctor_preview_welcomepage' %}"
+        <a href="{% url 'projector_preview' callback='default' %}"
             rel="tooltip" data-original-title="{% trans 'Preview' %}" class="btn btn-mini right">
             <i class="icon-search"></i>
         </a>
diff --git a/openslides/projector/urls.py b/openslides/projector/urls.py
index 5689fbfc9..b266dc1d0 100644
--- a/openslides/projector/urls.py
+++ b/openslides/projector/urls.py
@@ -10,11 +10,6 @@ urlpatterns = patterns(
         views.ProjectorView.as_view(),
         name='projector_show'),
 
-    url(r'^preview/$',
-        views.ProjectorView.as_view(),
-        {'callback': None},
-        name='projctor_preview_welcomepage'),
-
     url(r'^preview/(?P<callback>[^/]*)/$',
         views.ProjectorView.as_view(),
         name='projector_preview'),
diff --git a/openslides/projector/views.py b/openslides/projector/views.py
index 8bcb59437..080d02284 100644
--- a/openslides/projector/views.py
+++ b/openslides/projector/views.py
@@ -50,6 +50,7 @@ class ActivateView(RedirectView):
     def pre_redirect(self, request, *args, **kwargs):
         if (kwargs['callback'] == 'mediafile' and
                 get_active_slide()['callback'] == 'mediafile'):
+            # TODO: find a way to do this in the mediafile-app
             # If the current slide is a pdf and the new page is also a slide,
             # we dont have to use set_active_slide, because is causes a content
             # reload.