diff --git a/AUTHORS b/AUTHORS
index 545111877c..69da9144ca 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -108,6 +108,7 @@ answer newbie questions, and generally made Django that much better:
     Michal Chruszcz <troll@pld-linux.org>
     Can Burak Çilingir <canburak@cs.bilgi.edu.tr>
     Ian Clelland <clelland@gmail.com>
+    Travis Cline <travis.cline@gmail.com>
     Russell Cloran <russell@rucus.net>
     colin@owlfish.com
     crankycoder@gmail.com
diff --git a/django/db/models/base.py b/django/db/models/base.py
index 6304e009d3..d1232ee4cf 100644
--- a/django/db/models/base.py
+++ b/django/db/models/base.py
@@ -1,6 +1,5 @@
 import types
 import sys
-import os
 from itertools import izip
 import django.db.models.manager     # Imported to register signal handler.
 from django.core.exceptions import ObjectDoesNotExist, MultipleObjectsReturned, FieldError, ValidationError, NON_FIELD_ERRORS
@@ -16,7 +15,7 @@ from django.db.models.loading import register_models, get_model
 from django.utils.translation import ugettext_lazy as _
 import django.utils.copycompat as copy
 from django.utils.functional import curry, update_wrapper
-from django.utils.encoding import smart_str, force_unicode, smart_unicode
+from django.utils.encoding import smart_str, force_unicode
 from django.utils.text import get_text_list, capfirst
 from django.conf import settings
 
@@ -744,11 +743,11 @@ class Model(object):
                     continue
                 if f.unique:
                     unique_checks.append((model_class, (name,)))
-                if f.unique_for_date:
+                if f.unique_for_date and f.unique_for_date not in exclude:
                     date_checks.append((model_class, 'date', name, f.unique_for_date))
-                if f.unique_for_year:
+                if f.unique_for_year and f.unique_for_year not in exclude:
                     date_checks.append((model_class, 'year', name, f.unique_for_year))
-                if f.unique_for_month:
+                if f.unique_for_month and f.unique_for_month not in exclude:
                     date_checks.append((model_class, 'month', name, f.unique_for_month))
         return unique_checks, date_checks
 
diff --git a/tests/modeltests/model_forms/tests.py b/tests/modeltests/model_forms/tests.py
index 6a5f9395cc..c5647c714f 100644
--- a/tests/modeltests/model_forms/tests.py
+++ b/tests/modeltests/model_forms/tests.py
@@ -156,6 +156,10 @@ class UniqueTest(TestCase):
         form = PostForm({'subtitle': "Finally", "title": "Django 1.0 is released",
             "slug": "Django 1.0", 'posted': '2008-09-03'}, instance=p)
         self.assertTrue(form.is_valid())
+        form = PostForm({'title': "Django 1.0 is released"})
+        self.assertFalse(form.is_valid())
+        self.assertEqual(len(form.errors), 1)
+        self.assertEqual(form.errors['posted'], [u'This field is required.'])
 
     def test_inherited_unique_for_date(self):
         p = Post.objects.create(title="Django 1.0 is released",
diff --git a/tests/modeltests/validation/test_unique.py b/tests/modeltests/validation/test_unique.py
index 1b966390c4..fb77c4d28c 100644
--- a/tests/modeltests/validation/test_unique.py
+++ b/tests/modeltests/validation/test_unique.py
@@ -40,6 +40,15 @@ class GetUniqueCheckTests(unittest.TestCase):
             ), m._get_unique_checks()
         )
 
+    def test_unique_for_date_exclusion(self):
+        m = UniqueForDateModel()
+        self.assertEqual((
+            [(UniqueForDateModel, ('id',))],
+            [(UniqueForDateModel, 'year', 'count', 'end_date'),
+             (UniqueForDateModel, 'month', 'order', 'end_date')]
+            ), m._get_unique_checks(exclude='start_date')
+        )
+
 class PerformUniqueChecksTest(unittest.TestCase):
     def setUp(self):
         # Set debug to True to gain access to connection.queries.