diff --git a/vendor/symposion/teams/backends.py b/vendor/symposion/teams/backends.py
index a882bf5d7df2115ba0ead624e39dcda0608935b5..b03cca2b654ce29bfd012df232b744ae768a936e 100644
--- a/vendor/symposion/teams/backends.py
+++ b/vendor/symposion/teams/backends.py
@@ -5,7 +5,7 @@ from .models import Team
 
 class TeamPermissionsBackend(object):
 
-    def authenticate(self, username=None, password=None):
+    def authenticate(self, request, username=None, password=None):
         return None
 
     def get_team_permissions(self, user_obj, obj=None):
@@ -13,7 +13,7 @@ class TeamPermissionsBackend(object):
         Returns a set of permission strings that this user has through his/her
         team memberships.
         """
-        if user_obj.is_anonymous() or obj is not None:
+        if user_obj.is_anonymous or obj is not None:
             return set()
         if not hasattr(user_obj, "_team_perm_cache"):
             # Member permissions