diff --git a/tests/unit/wiring/package/subpackage/__init__.py b/tests/unit/wiring/package/subpackage/__init__.py
index e69de29b..e73dd8ce 100644
--- a/tests/unit/wiring/package/subpackage/__init__.py
+++ b/tests/unit/wiring/package/subpackage/__init__.py
@@ -0,0 +1,8 @@
+from dependency_injector.wiring import Provide
+
+from ...container import Container
+from ...service import Service
+
+
+def test_package_function(service: Service = Provide[Container.service]):
+    return service
diff --git a/tests/unit/wiring/test_wiring_py36.py b/tests/unit/wiring/test_wiring_py36.py
index 8f755391..64762b00 100644
--- a/tests/unit/wiring/test_wiring_py36.py
+++ b/tests/unit/wiring/test_wiring_py36.py
@@ -25,6 +25,11 @@ class WiringTest(unittest.TestCase):
         service = test_package_function()
         self.assertIsInstance(service, Service)
 
+    def test_package_subpackage_lookup(self):
+        from .package.subpackage import test_package_function
+        service = test_package_function()
+        self.assertIsInstance(service, Service)
+
     def test_package_submodule_lookup(self):
         from .package.subpackage.submodule import test_function
         service = test_function()