diff --git a/django/db/models/base.py b/django/db/models/base.py
index 7de0124586..5abdd59483 100644
--- a/django/db/models/base.py
+++ b/django/db/models/base.py
@@ -621,7 +621,7 @@ class Model(object):
     def _get_unique_checks(self):
         from django.db.models.fields import FieldDoesNotExist, Field as ModelField
 
-        unique_checks = self._meta.unique_together[:]
+        unique_checks = list(self._meta.unique_together)
         # these are checks for the unique_for_<date/year/month>
         date_checks = []
 
diff --git a/tests/modeltests/validation/models.py b/tests/modeltests/validation/models.py
index 61095fc52c..e1bbaa6a39 100644
--- a/tests/modeltests/validation/models.py
+++ b/tests/modeltests/validation/models.py
@@ -15,3 +15,25 @@ class ModelToValidate(models.Model):
         if self.number == 11:
             raise ValidationError('Invalid number supplied!')
 
+class UniqueFieldsModel(models.Model):
+    unique_charfield = models.CharField(max_length=100, unique=True)
+    unique_integerfield = models.IntegerField(unique=True)
+    non_unique_field = models.IntegerField()
+
+class CustomPKModel(models.Model):
+    my_pk_field = models.CharField(max_length=100, primary_key=True)
+
+class UniqueTogetherModel(models.Model):
+    cfield = models.CharField(max_length=100)
+    ifield = models.IntegerField()
+    efield = models.EmailField()
+
+    class Meta:
+        unique_together = (('ifield', 'cfield',),('ifield', 'efield'), )
+
+class UniqueForDateModel(models.Model):
+    start_date = models.DateField()
+    end_date = models.DateTimeField()
+    count = models.IntegerField(unique_for_date="start_date", unique_for_year="end_date")
+    order = models.IntegerField(unique_for_month="end_date")
+    name = models.CharField(max_length=100)
diff --git a/tests/modeltests/validation/tests.py b/tests/modeltests/validation/tests.py
index 4bd7e8abf1..fd30628c19 100644
--- a/tests/modeltests/validation/tests.py
+++ b/tests/modeltests/validation/tests.py
@@ -1,7 +1,8 @@
 from django.core.exceptions import ValidationError, NON_FIELD_ERRORS
 from django.test import TestCase
+from django.db import models
 
-from models import ModelToValidate
+from models import *
 
 class BaseModelValidationTests(TestCase):
     def test_missing_required_field_raises_error(self):
@@ -37,3 +38,25 @@ class BaseModelValidationTests(TestCase):
         mtv=ModelToValidate(number=10, name='Some Name', parent_id=parent.pk)
         self.assertEqual(None, mtv.clean())
 
+class GetUniqueCheckTests(TestCase):
+    def test_unique_fields_get_collected(self):
+        m = UniqueFieldsModel()
+        self.assertEqual(([('id',), ('unique_charfield',), ('unique_integerfield',)], []), m._get_unique_checks())
+
+    def test_unique_together_gets_picked_up(self):
+        m = UniqueTogetherModel()
+        self.assertEqual(([('ifield', 'cfield',),('ifield', 'efield'), ('id',), ], []), m._get_unique_checks())
+
+    def test_primary_key_is_considered_unique(self):
+        m = CustomPKModel()
+        self.assertEqual(([('my_pk_field',)], []), m._get_unique_checks())
+
+    def test_unique_for_date_gets_picked_up(self):
+        m = UniqueForDateModel()
+        self.assertEqual((
+                [('id',)],
+                [('date', 'count', 'start_date'), ('year', 'count', 'end_date'), ('month', 'order', 'end_date')]
+            ), m._get_unique_checks()
+        )
+
+