diff --git a/wiki/auth/anonymous_user.py b/wiki/auth/anonymous_user.py
index abffeda1..0222f117 100644
--- a/wiki/auth/anonymous_user.py
+++ b/wiki/auth/anonymous_user.py
@@ -38,7 +38,7 @@ class AnonymousAuth(BaseAuth):
     def request(self, request, user_obj, **kw):
 
         # authenticated user
-        if user_obj and user_obj.valid:
+        if user_obj and user_obj.valid and user_obj.auth_method != self.name and user_obj.name != self.auth_username:
             return user_obj, True
 
 
@@ -46,11 +46,15 @@ class AnonymousAuth(BaseAuth):
         if self.can_view(request):
             if user_obj and user_obj.valid:
                 return user_obj, True
+            sys.stderr.write("Authetification anonyme dans %s\n" % self.name)
             u = user.User(request, auth_username=self.auth_username, auth_method=self.name)
+            u.auth_username=self.auth_username
+            u.name=self.auth_username
             u.valid = True
+            u.auth_method = self.name
             u.name = self.auth_username
         elif user_obj and user_obj.valid:
-            u = user.User(request, auth_method=self.name)
+            u=user_obj
             u.valid = False
         else:
             u = user_obj