diff --git a/django/core/serializers/python.py b/django/core/serializers/python.py
index 859816c226..1e1e6f4bec 100644
--- a/django/core/serializers/python.py
+++ b/django/core/serializers/python.py
@@ -57,7 +57,7 @@ def Deserializer(object_list, **options):
     for d in object_list:
         # Look up the model and starting build a dict of data for it.
         Model = _get_model(d["model"])
-        data = {Model._meta.pk.name : d["pk"]}
+        data = {Model._meta.pk.attname : d["pk"]}
         m2m_data = {}
         
         # Handle each field
diff --git a/tests/modeltests/serializers/models.py b/tests/modeltests/serializers/models.py
index d1d10b43c0..e24ff537c1 100644
--- a/tests/modeltests/serializers/models.py
+++ b/tests/modeltests/serializers/models.py
@@ -37,6 +37,13 @@ class Article(models.Model):
     def __str__(self):
         return self.headline
 
+class AuthorProfile(models.Model):
+    author = models.OneToOneField(Author)
+    date_of_birth = models.DateField()
+    
+    def __str__(self):
+        return "Profile of %s" % self.author
+
 __test__ = {'API_TESTS':"""
 # Create some data:
 >>> from datetime import datetime
@@ -118,4 +125,18 @@ __test__ = {'API_TESTS':"""
 >>> Article.objects.all()
 [<Article: Just kidding; I love TV poker>, <Article: Time to reform copyright>]
 
+# If you use your own primary key field (such as a OneToOneField), 
+# it doesn't appear in the serialized field list - it replaces the
+# pk identifier.
+>>> profile = AuthorProfile(author=joe, date_of_birth=datetime(1970,1,1))
+>>> profile.save()
+
+>>> json = serializers.serialize("json", AuthorProfile.objects.all())
+>>> json
+'[{"pk": "1", "model": "serializers.authorprofile", "fields": {"date_of_birth": "1970-01-01"}}]'
+
+>>> for obj in serializers.deserialize("json", json):
+...     print obj
+<DeserializedObject: Profile of Joe>
+
 """}