diff --git a/django/contrib/auth/models.py b/django/contrib/auth/models.py
index 1552074a2d..e8384ba353 100644
--- a/django/contrib/auth/models.py
+++ b/django/contrib/auth/models.py
@@ -209,7 +209,6 @@ class User(models.Model):
 
     def get_all_permissions(self):
         if not hasattr(self, '_perm_cache'):
-            import sets
             self._perm_cache = set(["%s.%s" % (p.content_type.app_label, p.codename) for p in self.user_permissions.select_related()])
             self._perm_cache.update(self.get_group_permissions())
         return self._perm_cache