diff -r 747eec42e7ae distutils2/tests/test_version.py
--- a/distutils2/tests/test_version.py	Mon May 21 17:01:44 2012 -0400
+++ b/distutils2/tests/test_version.py	Tue Oct 02 10:31:29 2012 +1000
@@ -21,7 +21,8 @@
                 (V('1.2.3.4.0b3', drop_trailing_zeros=True), '1.2.3.4b3'),
                 (V('1.2.0.0.0', drop_trailing_zeros=True), '1.2'),
                 (V('1.0.dev345'), '1.0.dev345'),
-                (V('1.0.post456.dev623'), '1.0.post456.dev623'))
+                (V('1.0.post456.dev623'), '1.0.post456.dev623'),
+                (V('1.0.post1'), '1.0.post1'))
 
     def test_repr(self):
 
diff -r 747eec42e7ae distutils2/version.py
--- a/distutils2/version.py	Mon May 21 17:01:44 2012 -0400
+++ b/distutils2/version.py	Tue Oct 02 10:31:29 2012 +1000
@@ -174,6 +174,8 @@
         if postdev and postdev is not _FINAL_MARKER:
             if postdev[0] == _FINAL_MARKER[0]:
                 postdev = postdev[1:]
+            if postdev[-1] == _FINAL_MARKER[0]:
+                postdev = postdev[:-1]
             i = 0
             while i < len(postdev):
                 if i % 2 == 0: