diff --git a/torchrl/envs/batched_envs.py b/torchrl/envs/batched_envs.py
index f7a25c1bd5c..5b6763f6910 100644
--- a/torchrl/envs/batched_envs.py
+++ b/torchrl/envs/batched_envs.py
@@ -730,19 +730,20 @@ def _create_td(self) -> None:
                     )
                 )
             env_output_keys = env_output_keys.union(self.reward_keys + self.done_keys)
-            env_obs_keys = [
-                key for key in env_obs_keys if key not in self._non_tensor_keys
-            ]
-            env_input_keys = [
-                key for key in env_input_keys if key not in self._non_tensor_keys
-            ]
-            env_output_keys = [
-                key for key in env_output_keys if key not in self._non_tensor_keys
-            ]
             self._env_obs_keys = sorted(env_obs_keys, key=_sort_keys)
             self._env_input_keys = sorted(env_input_keys, key=_sort_keys)
             self._env_output_keys = sorted(env_output_keys, key=_sort_keys)
 
+        self._env_obs_keys = [
+            key for key in self._env_obs_keys if key not in self._non_tensor_keys
+        ]
+        self._env_input_keys = [
+            key for key in self._env_input_keys if key not in self._non_tensor_keys
+        ]
+        self._env_output_keys = [
+            key for key in self._env_output_keys if key not in self._non_tensor_keys
+        ]
+
         reset_keys = self.reset_keys
         self._selected_keys = (
             set(self._env_output_keys)