diff --git a/test/test_download.py b/test/test_download.py
index 59a6e1498f..e3513efba1 100644
--- a/test/test_download.py
+++ b/test/test_download.py
@@ -58,6 +58,7 @@ def _file_md5(fn):
 
 
 class TestDownload(unittest.TestCase):
+    maxDiff = None
     def setUp(self):
         self.parameters = parameters
         self.defs = defs