diff --git a/tests/test_core.py b/tests/test_core.py
index cbc12e844a2e997f934785ba35b4494a793fb456..886197dc030ade9c487cd049922799243bb0655e 100644
--- a/tests/test_core.py
+++ b/tests/test_core.py
@@ -139,7 +139,6 @@ class TestFileGraph(TestCase):
             "hit_info_0": "pos_z",
             "hit_info_1": "time",
             "hit_info_2": "channel_id",
-            "hit_info_3": "is_valid",
             "indexed": True,
         }
         attrs = dict(self.f["x"].attrs)