diff --git a/lerobot/common/policies/sac/configuration_sac.py b/lerobot/common/policies/sac/configuration_sac.py
index 5f676933..4ae6e5d4 100644
--- a/lerobot/common/policies/sac/configuration_sac.py
+++ b/lerobot/common/policies/sac/configuration_sac.py
@@ -50,6 +50,7 @@ class SACConfig:
     state_encoder_hidden_dim = 256
     latent_dim = 128
     target_entropy = None
+    backup_entropy = True
     critic_network_kwargs = {
         "hidden_dims": [256, 256],
         "activate_final": True,