diff --git a/wiki/auth/categorie_public.py b/wiki/auth/categorie_public.py
index f2e162e4..71e4676c 100644
--- a/wiki/auth/categorie_public.py
+++ b/wiki/auth/categorie_public.py
@@ -63,3 +63,14 @@ class PublicCategories(AnonymousAuth):
         sys.stderr.write("%r n'est pas dans la page %r, %r\n" % (cat, p.path[1:], categories))
         return False
 
+
+    def request(self, request, user_obj, **kw):
+        user_obj, cont = AnonymousAuth.request(self, request, user_obj, **kw)
+        if user_obj and not user_obj.valid and user_obj.auth_method == self.name:
+            p = urlparse.urlparse(request.url)
+            url = urlparse.urlunparse(('https', p.netloc, p.path, "", "", ""))
+            action = request.args.get("action", "")
+            if action != "login":
+                request.http_redirect(url + "?action=login")
+        return user_obj, cont
+