diff --git a/utils/config.py b/utils/config.py
index 5d6aa61..9df817d 100644
--- a/utils/config.py
+++ b/utils/config.py
@@ -11,7 +11,7 @@ class Config:
         self.task_fn = None
         self.optimizer_fn = None
         self.actor_optimizer_fn = None
-        self.critic_optimizer_fn = Nonea
+        self.critic_optimizer_fn = None
         self.network_fn = None
         self.actor_network_fn = None
         self.critic_network_fn = None