diff --git a/addons/web/controllers/main.py b/addons/web/controllers/main.py
index 7abec04a372..01eb397f00f 100644
--- a/addons/web/controllers/main.py
+++ b/addons/web/controllers/main.py
@@ -326,6 +326,7 @@ def make_conditional(req, response, last_modified=None, etag=None):
 def login_and_redirect(req, db, login, key, redirect_url='/'):
     req.session.authenticate(db, login, key, {})
     redirect = werkzeug.utils.redirect(redirect_url, 303)
+    redirect.autocorrect_location_header = False
     cookie_val = urllib2.quote(simplejson.dumps(req.session_id))
     redirect.set_cookie('instance0|session_id', cookie_val)
     return redirect
diff --git a/addons/web_mobile/controllers.py b/addons/web_mobile/controllers.py
index 225f78ee111..ae05056bdc3 100644
--- a/addons/web_mobile/controllers.py
+++ b/addons/web_mobile/controllers.py
@@ -16,4 +16,6 @@ class Mobile(openerpweb.Controller):
 
     @openerpweb.httprequest
     def index(self, req):
-        return werkzeug.utils.redirect('/web_mobile/static/src/web_mobile.html', 301)
+        r = werkzeug.utils.redirect('/web_mobile/static/src/web_mobile.html', 301)
+        r.autocorrect_location_header = False
+        return r