diff --git a/trytond/model/model.py b/trytond/model/model.py
index 68177bf45c..e02da28c9e 100644
--- a/trytond/model/model.py
+++ b/trytond/model/model.py
@@ -388,7 +388,7 @@ class Model(WarningErrorMixin, URLMixin, PoolBase):
         return u'%s,%s' % (self.__name__, self.id)
 
     def __repr__(self):
-        if self.id < 0:
+        if self.id is None or self.id < 0:
             return "Pool().get('%s')(**%s)" % (self.__name__,
                 repr(self._default_values))
         else:
diff --git a/trytond/tests/__init__.py b/trytond/tests/__init__.py
index a16f4c25f3..b88a6e041a 100644
--- a/trytond/tests/__init__.py
+++ b/trytond/tests/__init__.py
@@ -101,6 +101,7 @@ def register():
         Binary,
         BinaryDefault,
         BinaryRequired,
+        Model,
         Singleton,
         URLObject,
         ModelStorage,
diff --git a/trytond/tests/model.py b/trytond/tests/model.py
index c0d17307b6..ed65904732 100644
--- a/trytond/tests/model.py
+++ b/trytond/tests/model.py
@@ -3,6 +3,7 @@
 from trytond.model import ModelSingleton, ModelSQL, UnionMixin, fields
 
 __all__ = [
+    'Model',
     'Singleton', 'URLObject',
     'ModelStorage',
     'ModelSQLRequiredField', 'ModelSQLTimestamp', 'ModelSQLFieldSet',
@@ -12,6 +13,12 @@ __all__ = [
     ]
 
 
+class Model(ModelSQL):
+    'Model'
+    __name__ = 'test.model'
+    name = fields.Char('Name')
+
+
 class Singleton(ModelSingleton, ModelSQL):
     'Singleton'
     __name__ = 'test.singleton'
diff --git a/trytond/tests/test_model.py b/trytond/tests/test_model.py
new file mode 100644
index 0000000000..8e92d66386
--- /dev/null
+++ b/trytond/tests/test_model.py
@@ -0,0 +1,33 @@
+# This file is part of Tryton.  The COPYRIGHT file at the top level of this
+# repository contains the full copyright notices and license terms.
+
+import unittest
+
+from trytond.pool import Pool
+from trytond.tests.test_tryton import install_module, with_transaction
+
+
+class ModelTestCase(unittest.TestCase):
+    'Test Model'
+
+    @classmethod
+    def setUpClass(cls):
+        install_module('tests')
+
+    @with_transaction()
+    def test_repr(self):
+        'Test repr'
+        pool = Pool()
+        Model = pool.get('test.model')
+
+        record = Model(name='foo')
+        self.assertEqual(
+            repr(record), "Pool().get('test.model')(**{'name': 'foo'})")
+
+        record.save()
+        self.assertEqual(
+            repr(record), "Pool().get('test.model')(%s)" % record.id)
+
+
+def suite():
+    return unittest.TestLoader().loadTestsFromTestCase(ModelTestCase)