diff --git a/maro/rl/policy/discrete_rl_policy.py b/maro/rl/policy/discrete_rl_policy.py
index c5d67b7e4..50e6d8943 100644
--- a/maro/rl/policy/discrete_rl_policy.py
+++ b/maro/rl/policy/discrete_rl_policy.py
@@ -244,7 +244,7 @@ def get_state(self) -> dict:
         }
 
     def set_state(self, policy_state: dict) -> None:
-        self._q_net.set_state(policy_state)
+        self._q_net.set_state(policy_state["net"])
         self._warmup = policy_state["policy"]["warmup"]
         self._call_count = policy_state["policy"]["call_count"]