diff --git a/openslides/assignment/views.py b/openslides/assignment/views.py
index f5e244732..6f95b44e0 100644
--- a/openslides/assignment/views.py
+++ b/openslides/assignment/views.py
@@ -318,7 +318,7 @@ class AssignmentPollDelete(DeleteView):
         return reverse('assignment_view', args=[self.assignment.id])
 
     def get_success_message(self):
-        return  _('Ballot was successfully deleted.') % self.object
+        return _('Ballot was successfully deleted.') % self.object
 
 
 class AssignmentPDF(PDFView):
diff --git a/openslides/participant/views.py b/openslides/participant/views.py
index 34cb032a0..32de514e3 100644
--- a/openslides/participant/views.py
+++ b/openslides/participant/views.py
@@ -478,7 +478,7 @@ def login(request):
     extra_content = {}
     try:
         admin = User.objects.get(pk=1)
-        if  admin.check_password(admin.default_password):
+        if admin.check_password(admin.default_password):
             extra_content['first_time_message'] = _(
                 "Installation was successfully! Use %(user)s "
                 "(password: %(password)s) for first login.<br>"
diff --git a/openslides/projector/api.py b/openslides/projector/api.py
index 7cbd5da02..a4a48ec82 100644
--- a/openslides/projector/api.py
+++ b/openslides/projector/api.py
@@ -89,9 +89,10 @@ def set_active_slide(sid, argument=None):
 
 
 def clear_projector_cache():
-    cache.delete('projector_content')
-    cache.delete('projector_scrollcontent')
-    cache.delete('projector_data')
+    for language, __ in settings.LANGUAGES:
+        cache.delete('projector_content_' + language)
+        cache.delete('projector_scrollcontent_' + language)
+        cache.delete('projector_data_' + language)
 
 
 def register_slidemodel(model, model_name=None, control_template=None, weight=0):
diff --git a/openslides/projector/views.py b/openslides/projector/views.py
index 997e89cf2..35a0b6885 100644
--- a/openslides/projector/views.py
+++ b/openslides/projector/views.py
@@ -104,25 +104,26 @@ class Projector(TemplateView, AjaxMixin):
         return context
 
     def get_ajax_context(self, **kwargs):
-        content = cache.get('projector_content')
+        language = self.request.LANGUAGE_CODE
+        content = cache.get('projector_content_' + language)
         if not content:
             content = render_block_to_string(
                 self.get_template_names()[0],
                 'content', self.data)
-            cache.set('projector_content', content, 1)
+            cache.set('projector_content_' + language, content, 1)
 
         scrollcontent = cache.get('projector_scrollcontent')
         if not scrollcontent:
             scrollcontent = render_block_to_string(
                 self.get_template_names()[0],
                 'scrollcontent', self.data)
-            cache.set('projector_scrollcontent', scrollcontent, 1)
+            cache.set('projector_scrollcontent_' + language, scrollcontent, 1)
 
         # TODO: do not call the hole data-methode, if we only need some vars
-        data = cache.get('projector_data')
+        data = cache.get('projector_data_' + language)
         if not data:
             data = self.data
-            cache.set('projector_data', data)
+            cache.set('projector_data_' + language, data)
         # clear cache if countdown is enabled
         if config['countdown_state'] == 'active':
             clear_projector_cache()