diff --git a/src/lerobot/processor/batch_processor.py b/src/lerobot/processor/batch_processor.py
index 2c496fe8b..1f356e9bf 100644
--- a/src/lerobot/processor/batch_processor.py
+++ b/src/lerobot/processor/batch_processor.py
@@ -121,3 +121,7 @@ class ToBatchProcessor:
     def reset(self) -> None:
         """Reset processor state (no-op for this processor)."""
         pass
+
+    def feature_contract(self, features: dict[str, Any]) -> dict[str, Any]:
+        """Return features (no-op for this processor)."""
+        return features