diff --git a/km3buu/tests/test_jobcard.py b/km3buu/tests/test_jobcard.py
index c08fe455a95876f771e29bb7496b4c2a4da2be99..6fc45b08949ab74b1a53076233d43e7375dec8fa 100644
--- a/km3buu/tests/test_jobcard.py
+++ b/km3buu/tests/test_jobcard.py
@@ -147,5 +147,5 @@ class TestJobcardSeed(unittest.TestCase):
             self.dfs.append(GiBUUOutput(output_dir.name).df)
 
     def test_output(self):
-        for a, b in combinations(self.dfs,2):
+        for a, b in combinations(self.dfs, 2):
             assert all((a == b).all(1))