diff --git a/patrole_tempest_plugin/rbac_exceptions.py b/patrole_tempest_plugin/rbac_exceptions.py
index 3958e17..89a735c 100644
--- a/patrole_tempest_plugin/rbac_exceptions.py
+++ b/patrole_tempest_plugin/rbac_exceptions.py
@@ -29,15 +29,11 @@
     message = ("The response body is missing the expected %(attribute)s due "
                "to policy enforcement failure.")
 
-    def __init__(self, empty=False, extra_attr=False, **kwargs):
+    def __init__(self, empty=False, **kwargs):
         if empty:
             self.message = ("The response body is empty due to policy "
                             "enforcement failure.")
             kwargs = {}
-        if extra_attr:
-            self.message = ("The response body contained an unexpected "
-                            "attribute due to policy enforcement failure.")
-            kwargs = {}
         super(RbacMalformedResponse, self).__init__(**kwargs)