diff --git a/examples/helloworld/workflow/example_workflow.py b/examples/helloworld/workflow/example_workflow.py
index 8bd4600..842fe80 100644
--- a/examples/helloworld/workflow/example_workflow.py
+++ b/examples/helloworld/workflow/example_workflow.py
@@ -15,11 +15,11 @@
 sys.path.insert(0, os.path.join(os.path.dirname(__file__), "..", "grpc_stubs"))
 
 from deploy import deploy
-from example_agent_stub import ExampleAgentStub
+from example_agent import ExampleAgent
 
 
 def main(name: str = "World"):
-    agent = ExampleAgentStub()
+    agent = ExampleAgent()
     greeting = agent.hello(name=name)
     return {"greeting": greeting.value()}
 
diff --git a/ventis/controller/global_controller.py b/ventis/controller/global_controller.py
index 4e416b4..943c31d 100644
--- a/ventis/controller/global_controller.py
+++ b/ventis/controller/global_controller.py
@@ -190,7 +190,7 @@ def _load_policy_rules(self):
             logger.info(
                 "No policy file found at %s, skipping policy setup.", policy_path
             )
-            return
+            return []
 
         with open(policy_path, "r") as f:
             policy_config = yaml.safe_load(f)