diff --git a/src/c3nav/editor/views/base.py b/src/c3nav/editor/views/base.py
index 01e32bad..f3a33865 100644
--- a/src/c3nav/editor/views/base.py
+++ b/src/c3nav/editor/views/base.py
@@ -3,6 +3,7 @@ from functools import wraps
 from django.http import HttpResponseNotModified, HttpResponseRedirect
 from django.shortcuts import render
 from django.utils.cache import patch_vary_headers
+from django.utils.translation import get_language
 
 from c3nav.editor.models import ChangeSet
 from c3nav.mapdata.models.access import AccessPermission
@@ -43,5 +44,5 @@ def sidebar_view(func=None, select_related=None):
 
 
 def etag_func(request, *args, **kwargs):
-    return (request.changeset.raw_cache_key_by_changes + ':' +
+    return (get_language() + ':' + request.changeset.raw_cache_key_by_changes + ':' +
             AccessPermission.cache_key_for_request(request, with_update=False))
diff --git a/src/c3nav/mapdata/api.py b/src/c3nav/mapdata/api.py
index 3a8fe401..93be5001 100644
--- a/src/c3nav/mapdata/api.py
+++ b/src/c3nav/mapdata/api.py
@@ -9,6 +9,7 @@ from django.shortcuts import redirect
 from django.utils.cache import get_conditional_response
 from django.utils.http import quote_etag
 from django.utils.translation import ugettext_lazy as _
+from django.utils.translation import get_language
 from rest_framework.decorators import detail_route, list_route
 from rest_framework.exceptions import NotFound, ValidationError
 from rest_framework.mixins import RetrieveModelMixin
@@ -37,7 +38,7 @@ def simple_api_cache(permissions=True, etag_func=AccessPermission.etag_func):
     def wrapper(func):
         @wraps(func)
         def wrapped_func(self, request, *args, **kwargs):
-            etag = quote_etag(etag_func(request) if permissions else MapUpdate.current_cache_key())
+            etag = quote_etag(get_language()+':'+(etag_func(request) if permissions else MapUpdate.current_cache_key()))
 
             response = get_conditional_response(request, etag=etag)
             if response is None: