diff --git a/docs/changelog.rst b/docs/changelog.rst
index 8f44c810..418c861d 100644
--- a/docs/changelog.rst
+++ b/docs/changelog.rst
@@ -2,6 +2,10 @@
 Changelog
 =========
 
+Changes in 0.6.X
+================
+- Fixed BinaryField lookup re (MongoEngine/mongoengine#48)
+
 Changes in 0.6.19
 =================
 
diff --git a/mongoengine/fields.py b/mongoengine/fields.py
index 82689929..8e3cf15a 100644
--- a/mongoengine/fields.py
+++ b/mongoengine/fields.py
@@ -1327,7 +1327,7 @@ class UUIDField(BaseField):
         super(UUIDField, self).__init__(**kwargs)
 
     def to_python(self, value):
-        if not self.binary:
+        if not self._binary:
             if not isinstance(value, basestring):
                 value = unicode(value)
             return uuid.UUID(value)
diff --git a/tests/test_fields.py b/tests/test_fields.py
index c4013c10..a6eaca43 100644
--- a/tests/test_fields.py
+++ b/tests/test_fields.py
@@ -283,6 +283,7 @@ class FieldTest(unittest.TestCase):
         uu = uuid.uuid4()
         Person(api_key=uu).save()
         self.assertEqual(1, Person.objects(api_key=uu).count())
+        self.assertEqual(uu, Person.objects.first().api_key)
 
         person = Person()
         valid = (uuid.uuid4(), uuid.uuid1())
@@ -307,6 +308,7 @@ class FieldTest(unittest.TestCase):
         uu = uuid.uuid4()
         Person(api_key=uu).save()
         self.assertEqual(1, Person.objects(api_key=uu).count())
+        self.assertEqual(uu, Person.objects.first().api_key)
 
         person = Person()
         valid = (uuid.uuid4(), uuid.uuid1())