From c88cf979f11a58ff22381cbfd8a9a844ffc6a565 Mon Sep 17 00:00:00 2001
From: Khalil Meftah <khalil.meftah@huggingface.co>
Date: Wed, 15 Apr 2026 11:49:38 +0200
Subject: [PATCH] fix: use string key for IS_INTERVENTION in complementary_info
 to avoid torch.load serialization error

---
 src/lerobot/rl/actor.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/lerobot/rl/actor.py b/src/lerobot/rl/actor.py
index 6d4b3022e..83c88fa96 100644
--- a/src/lerobot/rl/actor.py
+++ b/src/lerobot/rl/actor.py
@@ -338,7 +338,7 @@ def act_with_policy(
             "discrete_penalty": torch.tensor(
                 [new_transition[TransitionKey.COMPLEMENTARY_DATA].get("discrete_penalty", 0.0)]
             ),
-            TeleopEvents.IS_INTERVENTION: is_intervention,
+            "is_intervention": is_intervention,
         }
         # Create transition for learner (convert to old format)
         list_transition_to_send_to_learner.append(