diff --git a/tests/test_store_path.py b/tests/test_store_path.py
index aedec5e..736d214 100644
--- a/tests/test_store_path.py
+++ b/tests/test_store_path.py
@@ -425,9 +425,11 @@ class TestLayering(unittest.TestCase):
                 for line in f:
                     if line.startswith(("import ", "from ")):
                         imported.add(line.split()[1].split(".")[0])
-        local = {"issue", "issue_index"}
-        self.assertEqual(imported - local, {"argparse", "os", "re", "sys"},
-                         "non-stdlib or unexpected import in the domain layer")
+        local = {"issue", "issue_ac", "issue_index"}
+        foreign = imported - local - sys.stdlib_module_names
+        self.assertEqual(foreign, set(),
+                         "non-stdlib import in the domain layer: %s"
+                         % ", ".join(sorted(foreign)))
         self.assertNotIn("subprocess", imported)