diff --git a/tests/test_meta_invoice.py b/tests/test_meta_invoice.py
index 1d23aff2ead09c748289c81b206ad86f09ad9f11..17c69946066f0b180f0ff85bd1eef1ab475ad25e 100644
--- a/tests/test_meta_invoice.py
+++ b/tests/test_meta_invoice.py
@@ -144,3 +144,14 @@ def test_missing_invoice(hook, acct1, acct2):
 def test_not_required_on_opening(hook):
     txn = testutil.OpeningBalance()
     assert not list(hook.run(txn))
+
+@pytest.mark.parametrize('acct1,acct2', testutil.combine_values(
+    REQUIRED_ACCOUNTS,
+    NON_REQUIRED_ACCOUNTS,
+))
+def test_not_required_on_flagged(acct1, acct2, hook):
+    txn = testutil.Transaction(flag='!', postings=[
+        (acct1, 25),
+        (acct2, -25),
+    ])
+    assert not list(hook.run(txn))