diff --git a/temporal/workflow.py b/temporal/workflow.py
index 47cd05e..5728597 100644
--- a/temporal/workflow.py
+++ b/temporal/workflow.py
@@ -91,10 +91,7 @@ class SimulationWorkflow:
             client = await Client.connect(TEMPORAL_URL)
             handle = client.get_workflow_handle(sim_data["CallbackWorkflowId"])
 
-            await handle.signal("notify_done", {
-                "simulation_id": sim_data["HubCnnId"],
-                "status": "success"
-            })
+            await handle.signal("notify_done")
 
 
         return sim_data["HubCnnId"]  # simulation_id