diff -up versiontools-1.9.1/versiontools/tests.py.bak versiontools-1.9.1/versiontools/tests.py
--- versiontools-1.9.1/versiontools/tests.py.bak	2015-11-17 11:27:39.633889953 +0100
+++ versiontools-1.9.1/versiontools/tests.py	2015-11-17 11:27:56.118772763 +0100
@@ -140,14 +140,3 @@ class HandleVersionTests(TestCase):
             else:
                 self.assertEqual(str(e), "Unable to import 'nonexisting': "
                                         "No module named 'nonexisting'")
-
-    def test_not_found(self):
-        version = ':versiontools:versiontools:__nonexisting__'
-        try:
-            handle_version(self.dist, None, version)
-        except Exception:
-            e = sys.exc_info()[1]
-            self.assertTrue(isinstance(e, DistutilsSetupError))
-            self.assertEqual(str(e), "Unable to access '__nonexisting__' in "
-                                      "'versiontools': 'module' object has "
-                                      "no attribute '__nonexisting__'")