diff --git a/taskflow/engines/action_engine/completer.py b/taskflow/engines/action_engine/completer.py
index 958d5f03..77ba6859 100644
--- a/taskflow/engines/action_engine/completer.py
+++ b/taskflow/engines/action_engine/completer.py
@@ -28,7 +28,6 @@ class Completer(object):
         self._runtime = runtime
         self._analyzer = runtime.analyzer
         self._retry_action = runtime.retry_action
-        self._runtime = runtime
         self._storage = runtime.storage
         self._task_action = runtime.task_action