diff --git a/src/lerobot/rl/algorithms/sac/sac_algorithm.py b/src/lerobot/rl/algorithms/sac/sac_algorithm.py
index 61886289a..55b228026 100644
--- a/src/lerobot/rl/algorithms/sac/sac_algorithm.py
+++ b/src/lerobot/rl/algorithms/sac/sac_algorithm.py
@@ -74,6 +74,7 @@ class SACAlgorithm(RLAlgorithm):
         self._init_critic_encoder()
         self._init_critics()
         self._init_temperature()
+        self._move_to_device()
 
     def _init_critic_encoder(self) -> None:
         """Build or share the encoder used by critics."""
@@ -131,6 +132,14 @@ class SACAlgorithm(RLAlgorithm):
             dim = action_dim + (1 if self.config.num_discrete_actions is not None else 0)
             self.target_entropy = -np.prod(dim) / 2
 
+    def _move_to_device(self) -> None:
+        """Move algorithm-owned modules to the policy device."""
+        self.critic_ensemble.to(self._device)
+        self.critic_target.to(self._device)
+        self.log_alpha = nn.Parameter(self.log_alpha.data.to(self._device))
+        if hasattr(self, "discrete_critic_target"):
+            self.discrete_critic_target.to(self._device)
+
     @property
     def temperature(self) -> float:
         return self.log_alpha.exp().item()