diff --git a/test_oath.py b/test_oath.py
index 6ce157c..bea5914 100644
--- a/test_oath.py
+++ b/test_oath.py
@@ -73,7 +73,7 @@ class TestSecret(unittest.TestCase):
         self.assertEqual(decode_secret("ge zd gn bv"), decode_secret("GEZDGNBV"))
 
     def test_pad_short_key_to_14_zero_filled(self):
-        raw = decode_secret("JBSWY3DPEHPK3PXP")  # 16 chars -> 10 bytes
+        raw = decode_secret("JBSWY3DPEHPK3PXP")  # dummy: 16 chars -> 10 bytes
         self.assertEqual(len(raw), 10)
         padded = pad_key(raw)
         self.assertEqual(len(padded), 14)