diff --git a/dagflow/dagflow.py b/dagflow/dagflow.py
index feeab9e..290d585 100644
--- a/dagflow/dagflow.py
+++ b/dagflow/dagflow.py
@@ -420,7 +420,7 @@ where status in ['pending', 'running']
 				'instance_id': inst['id']
 			})
 			return True
-		some = extract_some_value(join):
+		some = extract_some_value(join)
 		sql = """select * from node_transfer 
 where instance_id=${instance_id}$
 	and to_node_id = ${node_id}$"""