diff --git a/tests/test_reports_accrual.py b/tests/test_reports_accrual.py
index 230545ce535fde450c54c69941e0454ddb87456c..5ae73db255d8487f0413b72cf98ec94cb92e7275 100644
--- a/tests/test_reports_accrual.py
+++ b/tests/test_reports_accrual.py
@@ -737,7 +737,7 @@ def test_main_aging_report(tmp_path, arglist):
 
 def test_main_no_books():
     check_main_fails([], testutil.TestConfig(), 1 | 8, [
-        r':1: +no books to load in configuration\b',
+        r':[01]: +no books to load in configuration\b',
     ])
 
 @pytest.mark.parametrize('arglist', [