diff --git a/test/src/jupyterhub_config/custom_spawner_test.py b/test/src/jupyterhub_config/custom_spawner_test.py
index 02b6bad..af35eba 100644
--- a/test/src/jupyterhub_config/custom_spawner_test.py
+++ b/test/src/jupyterhub_config/custom_spawner_test.py
@@ -201,6 +201,8 @@ def test_ensure_user_directory_reuse_existing(caplog):
             spawner = VirtualEnvSpawner()
             spawner._ensure_user_directory(user_dir, username)
 
+        assert user_dir.exists()
+
         # Check log message
         assert f'Reusing user directory for {username}' in caplog.text