diff --git a/selfdrive/loggerd/tests/test_loggerd.py b/selfdrive/loggerd/tests/test_loggerd.py
index 37d131ba2a..04adfe7fa8 100755
--- a/selfdrive/loggerd/tests/test_loggerd.py
+++ b/selfdrive/loggerd/tests/test_loggerd.py
@@ -130,7 +130,7 @@ class TestLoggerd(unittest.TestCase):
         p = Path(f"{route_path}--{n}")
         logged = set([f.name for f in p.iterdir() if f.is_file()])
         diff = logged ^ expected_files
-        self.assertEqual(len(diff), 0)
+        self.assertEqual(len(diff), 0, f"{_=} {route_path=} {n=}, {logged=} {expected_files=}")
 
   def test_bootlog(self):
     # generate bootlog with fake launch log