diff --git a/src/gfn/gym/line.py b/src/gfn/gym/line.py
index 6b246f94..a0b2534e 100644
--- a/src/gfn/gym/line.py
+++ b/src/gfn/gym/line.py
@@ -42,7 +42,7 @@ def __init__(
             action_shape=(1,),  # [x_pos]
             dummy_action=dummy_action,
             exit_action=exit_action,
-        )  # sf is -inf by defaukt.
+        )  # sf is -inf by default.
 
     def step(
         self, states: States, actions: Actions
@@ -73,11 +73,6 @@ def is_action_valid(
 
     def log_reward(self, final_states: States) -> TT["batch_shape", torch.float]:
         s = final_states.tensor[..., 0]
-        # return torch.logsumexp(torch.stack([m.log_prob(s) for m in self.mixture], 0), 0)
-
-        # if s.nelement() == 0:
-        #     return torch.zeros(final_states.batch_shape)
-
         log_rewards = torch.empty((len(self.mixture),) + final_states.batch_shape)
         for i, m in enumerate(self.mixture):
             log_rewards[i] = m.log_prob(s)