diff --git a/tests/test_offline.py b/tests/test_offline.py
index 8adda39facd746a143ce7f0f69f38bb1c4b00b94..b4310b4ce73b782b324bc819f1a2d0b409eb5c04 100644
--- a/tests/test_offline.py
+++ b/tests/test_offline.py
@@ -406,6 +406,7 @@ class TestOfflineHits(unittest.TestCase):
         assert "channel_id" in self.hits.fields
         assert "t" in self.hits.fields
         assert "tot" in self.hits.fields
+        assert "a" in self.hits.fields
         assert "trig" in self.hits.fields
         assert "id" in self.hits.fields