diff --git a/dagflow/dagflow.py b/dagflow/dagflow.py
index 02b6857..e14e5fa 100644
--- a/dagflow/dagflow.py
+++ b/dagflow/dagflow.py
@@ -454,7 +454,7 @@ where instance_id=${instance_id}$
 					'id': node['id'],
 					'status': 'failed',
 					'stopping_at': timestampstr()
-				}
+				})
 			
 	async def list_human_tasks(self, org_id, user_roles):
 		env = ServerEnv()