diff --git a/test/test_utils.py b/test/test_utils.py
index 8a9cd9e85..634426970 100644
--- a/test/test_utils.py
+++ b/test/test_utils.py
@@ -14,7 +14,9 @@ class ReplaceWin32IncompatTest(unittest.TestCase):
 
     def test_correct(self):
         self.assertEqual(util.replace_win32_incompat("c:\\test\\te\"st/2"),
-                             "c_\\test\\te_st/2")
+                             "c:\\test\\te_st/2")
+        self.assertEqual(util.replace_win32_incompat("c:\\test\\d:/2"),
+                             "c:\\test\\d_/2")
         self.assertEqual(util.replace_win32_incompat("A\"*:<>?|b"),
                              "A_______b")