diff --git a/tests/test_filterLabelFixups.py b/tests/test_filterLabelFixups.py
index 350ffd3..bf79475 100644
--- a/tests/test_filterLabelFixups.py
+++ b/tests/test_filterLabelFixups.py
@@ -133,7 +133,7 @@ def testReadingBadNewFileWithFullDataId(self):
             self.calexpMinimalDataId,
             band="g",
             physical_filter="HSC-G",
-            visit_system=0,
+            day_obs=20240101,
         )
         self.assertTrue(calexpBadDataId.hasFull())