diff --git a/bocal_auth/rhosts.py b/bocal_auth/rhosts.py
index 1b9230e..bd6d9a3 100644
--- a/bocal_auth/rhosts.py
+++ b/bocal_auth/rhosts.py
@@ -72,6 +72,8 @@ def grantBOcalPrivileges(user):
 
 def requireCasUser(fct):
     def hasCas(user):
+        if user.is_anonymous:
+            return False
         return CasUser.objects.filter(user=user).count() > 0
 
     def wrap(user, *args, **kwargs):