diff --git a/src/c3nav/editor/views/base.py b/src/c3nav/editor/views/base.py
index 3f59e4bb..01e32bad 100644
--- a/src/c3nav/editor/views/base.py
+++ b/src/c3nav/editor/views/base.py
@@ -2,6 +2,7 @@ from functools import wraps
 
 from django.http import HttpResponseNotModified, HttpResponseRedirect
 from django.shortcuts import render
+from django.utils.cache import patch_vary_headers
 
 from c3nav.editor.models import ChangeSet
 from c3nav.mapdata.models.access import AccessPermission
@@ -29,11 +30,13 @@ def sidebar_view(func=None, select_related=None):
             if not isinstance(response, HttpResponseNotModified):
                 response.write(render(request, 'editor/fragment_nav.html', {}).content)
             response['Cache-Control'] = 'no-cache'
+            patch_vary_headers(response, 'X-Requested-With')
             return response
         if isinstance(response, HttpResponseRedirect):
             return response
         response = render(request, 'editor/map.html', {'content': response.content})
         response['Cache-Control'] = 'no-cache'
+        patch_vary_headers(response, 'X-Requested-With')
         return response
 
     return with_ajax_check