diff --git a/django/db/models/manager.py b/django/db/models/manager.py
index 4a0892f38b..262a696294 100644
--- a/django/db/models/manager.py
+++ b/django/db/models/manager.py
@@ -84,9 +84,6 @@ class Manager(object):
         where.extend(where2)
         params.extend(params2)
 
-        # Add any additional constraints from the "where_constraints" parameter.
-        where.extend(opts.where_constraints)
-
         # Add additional tables and WHERE clauses based on select_related.
         if kwargs.get('select_related') is True:
             fill_table_cache(opts, select, tables, where, opts.db_table, [opts.db_table])
diff --git a/django/db/models/options.py b/django/db/models/options.py
index 315811a0f1..97d3659f60 100644
--- a/django/db/models/options.py
+++ b/django/db/models/options.py
@@ -10,8 +10,7 @@ import re
 get_verbose_name = lambda class_name: re.sub('([A-Z])', ' \\1', class_name).lower().strip()
 
 DEFAULT_NAMES = ('verbose_name', 'verbose_name_plural', 'db_table', 'ordering',
-                  'unique_together', 'where_constraints', 'permissions',
-                  'get_latest_by', 'order_with_respect_to')
+                 'unique_together', 'permissions', 'get_latest_by', 'order_with_respect_to')
 
 class Options:
     def __init__(self, meta):
@@ -21,7 +20,6 @@ class Options:
         self.db_table = ''
         self.ordering = []
         self.unique_together =  []
-        self.where_constraints =  []
         self.permissions =  []
         self.object_name, self.app_label = None, None
         self.get_latest_by = None