diff --git a/ndiff/ndifftest.py b/ndiff/ndifftest.py
index 6daffb8b2..3496fb25d 100755
--- a/ndiff/ndifftest.py
+++ b/ndiff/ndifftest.py
@@ -293,7 +293,7 @@ class host_diff_test(unittest.TestCase):
         for hunk in diff:
             self.assertTrue(hunk.type in self.PORT_DIFF_HUNK_TYPES)
         diff = host_diff(b, a)
-        self.assertTrue(len(diff) == 0)
+        self.assertTrue(len(diff) > 0)
         for hunk in diff:
             self.assertTrue(hunk.type in self.PORT_DIFF_HUNK_TYPES)