diff --git a/wiki/auth/cas.py b/wiki/auth/cas.py
index e1b02d93..5ab2ec93 100644
--- a/wiki/auth/cas.py
+++ b/wiki/auth/cas.py
@@ -128,10 +128,10 @@ class CASAuth(BaseAuth):
                             session_service.destroy_session(request, session)
 
         # authenticated user
-        #if not force and user_obj and user_obj.valid:
-        #    if self.action == action:
-        #        request.http_redirect(url)
-        #    return user_obj, True
+        if not force and user_obj and user_obj.valid:
+            if self.action == action:
+                request.http_redirect(url)
+            return user_obj, True
 
         if self.ticket_path and request.method == 'POST':
             logoutRequest=request.form.get('logoutRequest', None)