diff --git a/tianshou/highlevel/agent.py b/tianshou/highlevel/agent.py
index c9daeac..ed6f347 100644
--- a/tianshou/highlevel/agent.py
+++ b/tianshou/highlevel/agent.py
@@ -18,7 +18,7 @@ from tianshou.highlevel.module.core import (
 )
 from tianshou.highlevel.module.critic import CriticEnsembleFactory, CriticFactory
 from tianshou.highlevel.module.module_opt import (
-    ActorCriticModuleOpt,
+    ActorCriticOpt,
 )
 from tianshou.highlevel.optim import OptimizerFactory
 from tianshou.highlevel.params.policy_params import (
@@ -297,12 +297,12 @@ class ActorCriticAgentFactory(
         envs: Environments,
         device: TDevice,
         lr: float,
-    ) -> ActorCriticModuleOpt:
+    ) -> ActorCriticOpt:
         actor = self.actor_factory.create_module(envs, device)
         critic = self.critic_factory.create_module(envs, device, use_action=self.critic_use_action)
         actor_critic = ActorCritic(actor, critic)
         optim = self.optim_factory.create_optimizer(actor_critic, lr)
-        return ActorCriticModuleOpt(actor_critic, optim)
+        return ActorCriticOpt(actor_critic, optim)
 
     @typing.no_type_check
     def _create_kwargs(self, envs: Environments, device: TDevice) -> dict[str, Any]:
diff --git a/tianshou/highlevel/module/module_opt.py b/tianshou/highlevel/module/module_opt.py
index 222d680..558686a 100644
--- a/tianshou/highlevel/module/module_opt.py
+++ b/tianshou/highlevel/module/module_opt.py
@@ -14,7 +14,7 @@ class ModuleOpt:
 
 
 @dataclass
-class ActorCriticModuleOpt:
+class ActorCriticOpt:
     """Container for an :class:`ActorCritic` instance along with its optimizer."""
 
     actor_critic_module: ActorCritic