diff --git a/lerobot/scripts/server/learner_server.py b/lerobot/scripts/server/learner_server.py
index 89e51f62..82765a28 100644
--- a/lerobot/scripts/server/learner_server.py
+++ b/lerobot/scripts/server/learner_server.py
@@ -694,7 +694,7 @@ def add_actor_information_and_train(
 
         policy.update_target_networks()
 
-        if optimization_step % cfg.training.log_freq == 0:
+        if optimization_step % log_freq == 0:
             training_infos["replay_buffer_size"] = len(replay_buffer)
             if offline_replay_buffer is not None:
                 training_infos["offline_replay_buffer_size"] = len(