diff --git a/src/sp_test/tests.py b/src/sp_test/tests.py
index 8e6ec44..fc0879f 100644
--- a/src/sp_test/tests.py
+++ b/src/sp_test/tests.py
@@ -1,6 +1,6 @@
 # -*- coding: utf-8 -*-
 import copy
-from saml2 import samlp, SamlBase
+from saml2 import samlp
 from saml2 import NAMEID_FORMAT_EMAILADDRESS
 from saml2 import BINDING_HTTP_REDIRECT
 from saml2 import BINDING_HTTP_POST
@@ -36,10 +36,10 @@ class TimeRestriction(ConditionAbstractType_):
 
     c_tag = 'TimeRestriction'
     c_namespace = "urn:mace:umu.se:sso"
-    c_children = ConditionAbstractType_.c_children.copy()
-    c_attributes = ConditionAbstractType_.c_attributes.copy()
+    c_children = copy.copy(ConditionAbstractType_.c_children)
+    c_attributes = copy.copy(ConditionAbstractType_.c_attributes)
     c_child_order = ConditionAbstractType_.c_child_order[:]
-    c_cardinality = ConditionAbstractType_.c_cardinality.copy()
+    c_cardinality = copy.copy(ConditionAbstractType_.c_cardinality)
     c_attributes['StartTime'] = ('start_time', 'time', False)
     c_attributes['EndTime'] = ('end_time', 'time', False)
 
@@ -199,13 +199,6 @@ class AuthnResponse_missing_Recipient(AuthnResponse):
         return message
 
 
-class AuthnResponse_missing_Recipient(AuthnResponse):
-    def pre_processing(self, message, **kwargs):
-        _confirmation = message.assertion.subject.subject_confirmation
-        _confirmation[0].subject_confirmation_data.recipient = None
-        return message
-
-
 class AuthnResponse_broken_destination(AuthnResponse):
     def pre_processing(self, message, **kwargs):
         message.destination = "NotAUrl"