diff --git a/tests/test_plugin.py b/tests/test_plugin.py
index 9ae65869d93c0d02c63942197b402a3c1831eb8a..0a5ab619572b60a513dae77aa7ae8eda4e995fdd 100644
--- a/tests/test_plugin.py
+++ b/tests/test_plugin.py
@@ -112,6 +112,15 @@ def test_registry_unknown_group_name():
     with pytest.raises(ValueError):
         next(HOOK_REGISTRY.group_by_directive('UnKnownTestGroup'))
 
+def test_registry_load_included_hooks():
+    registry = plugin.HookRegistry()
+    assert not list(registry.group_by_directive())
+    registry.load_included_hooks()
+    actual = {hook.__name__ for key, hook in registry.group_by_directive() if key == 'Transaction'}
+    assert len(actual) >= 5
+    assert 'MetaProject' in actual
+    assert 'MetaRTLinks' in actual
+
 def test_run_with_multiple_hooks(easy_entries, config_map):
     out_entries, errors = plugin.run(easy_entries, config_map, '', HOOK_REGISTRY)
     assert len(out_entries) == 2