diff --git a/apps/addons/buttons.py b/apps/addons/buttons.py
index 69dcdcabf7..adb23ee5b8 100644
--- a/apps/addons/buttons.py
+++ b/apps/addons/buttons.py
@@ -137,7 +137,7 @@ class InstallButton(object):
             self.addon.status == file.status == amo.STATUS_PUBLIC):
             url = file.latest_xpi_url()
         else:
-            url = file.get_url_path(self.src)
+            url = file.get_url_path(self.app, self.src)
 
         if platform == amo.PLATFORM_ALL.id:
             text, os = _('Download Now'), None
diff --git a/apps/api/templates/api/includes/addon.xml b/apps/api/templates/api/includes/addon.xml
index 9e22b07675..7c7d7b918f 100644
--- a/apps/api/templates/api/includes/addon.xml
+++ b/apps/api/templates/api/includes/addon.xml
@@ -68,7 +68,7 @@
   {%- for file in addon.current_version.all_files -%}
   <install hash="{{ file.hash }}"
     os="{{ amo.PLATFORMS[file.platform_id].api_name }}"
-    size="{{ file.size * 1024 }}">{{ file.get_url_path('api') }}</install>
+    size="{{ file.size * 1024 }}">{{ file.get_url_path(APP, 'api') }}</install>
   {% endfor -%}
   {%- endif -%}
   {%- if api_version >= 1.5 %}
@@ -77,7 +77,7 @@
     <install hash="{{ file.hash }}" os="{{ file.platform.name }}"
              size="{{ file.size * 1024 }}"
              status="{{ amo.STATUS_CHOICES[amo.STATUS_BETA] }}">
-      {{ file.get_url_path('api') }}
+      {{ file.get_url_path(APP, 'api') }}
     </install>
     {% endfor -%}
     {%- endif -%}
diff --git a/apps/files/models.py b/apps/files/models.py
index 5fcc5e8f08..cc0d144714 100644
--- a/apps/files/models.py
+++ b/apps/files/models.py
@@ -2,6 +2,7 @@ import os
 
 from django.conf import settings
 from django.db import models
+from django.utils import translation
 
 import amo.models
 from amo.urlresolvers import reverse
@@ -24,9 +25,11 @@ class File(amo.models.ModelBase):
     class Meta(amo.models.ModelBase.Meta):
         db_table = 'files'
 
-    def get_url_path(self, src):
+    def get_url_path(self, app, src):
         from amo.helpers import urlparams
-        base = settings.FILES_URL % (self.id, self.filename, src)
+        lang = translation.get_language()
+        base = settings.FILES_URL % (lang, app.short, self.id,
+                                     self.filename, src)
         return urlparams(base, confirmed=1)
 
     def latest_xpi_url(self):
diff --git a/apps/files/tests.py b/apps/files/tests.py
index 59d07042b1..784dd3e413 100644
--- a/apps/files/tests.py
+++ b/apps/files/tests.py
@@ -2,6 +2,7 @@ from django import test
 
 from nose.tools import eq_
 
+import amo
 from files.models import File
 
 
@@ -14,9 +15,10 @@ class TestFile(test.TestCase):
 
     def test_get_absolute_url(self):
         f = File.objects.get(id=11993)
-        assert f.get_absolute_url(src='src').endswith(
-                'downloads/file/11993/'
-                'del.icio.us_bookmarks-1.0.43-fx.xpi?src=src&confirmed=1')
+        url = f.get_absolute_url(amo.FIREFOX, src='src')
+        expected = ('/firefox/downloads/file/11993/'
+                    'del.icio.us_bookmarks-1.0.43-fx.xpi?src=src&confirmed=1')
+        assert url.endswith(expected), url
 
     def test_latest_url(self):
         # With platform.
diff --git a/settings.py b/settings.py
index 6e031337c2..b1f605d80b 100644
--- a/settings.py
+++ b/settings.py
@@ -358,7 +358,7 @@ PREVIEW_FULL_URL = (STATIC_URL +
         '/img/uploads/previews/full/%s/%d.png?modified=%d')
 USER_PIC_URL = STATIC_URL + '/img/uploads/userpics/%s/%s/%s.jpg?modified=%d'
 # paths for uploaded extensions
-FILES_URL = STATIC_URL + "/downloads/file/%d/%s?src=%s"
+FILES_URL = STATIC_URL + "/%s/%s/downloads/file/%d/%s?src=%s"
 COLLECTION_ICON_URL = ('%s/%s/%s/images/collection_icon/%%s/%%s' %
                        (STATIC_URL, LANGUAGE_CODE, DEFAULT_APP))
 PERSONAS_IMAGE_URL = ('http://getpersonas.com/static/'