diff --git a/CHANGES.rst b/CHANGES.rst
index 0357a8d..4205219 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -4,6 +4,9 @@ unreleased
 - Allow deferred schema nodes.
   See https://github.com/Pylons/colander/pull/280
 
+- Fix an issue when using a node multiple times in a schema by cloning it.
+  See https://github.com/Pylons/colander/issues/279
+
 1.3.1 (2016-05-23)
 ==================
 
diff --git a/colander/__init__.py b/colander/__init__.py
index 08f8446..c5de77c 100644
--- a/colander/__init__.py
+++ b/colander/__init__.py
@@ -2242,7 +2242,7 @@ class _SchemaMeta(type):
                     value.title = name.replace('_', ' ').title()
                 nodes.append((value._order, value))
 
-        nodes.sort()
+        nodes.sort(key=lambda n: n[0])
         cls.__class_schema_nodes__ = [ n[1] for n in nodes ]
 
         # Combine all attrs from this class and its _SchemaNode superclasses.
diff --git a/colander/tests/test_colander.py b/colander/tests/test_colander.py
index 8cda68c..28ce8cf 100644
--- a/colander/tests/test_colander.py
+++ b/colander/tests/test_colander.py
@@ -3403,6 +3403,17 @@ class TestSchema(unittest.TestCase):
         self.assertEqual(schema.schema_type, colander.Mapping)
         self.assertEqual(schema.children[0], node)
 
+    def test_schema_with_cloned_nodes(self):
+        import colander
+        test_node = colander.SchemaNode(colander.String())
+        class TestSchema(colander.Schema):
+            a = test_node.clone()
+            b = test_node.clone()
+        node = TestSchema()
+        expected = {'a': 'foo', 'b': 'bar'}
+        result = node.serialize(expected)
+        self.assertEqual(result, expected)
+
 class TestSequenceSchema(unittest.TestCase):
     def test_succeed(self):
         import colander