diff --git a/grid2op/Environment/baseEnv.py b/grid2op/Environment/baseEnv.py
index 5e8d04f1..3e068f84 100644
--- a/grid2op/Environment/baseEnv.py
+++ b/grid2op/Environment/baseEnv.py
@@ -1463,20 +1463,19 @@ def set_id(self, id_: Union[int, str]) -> None:
     def reset(self, 
               *,
               seed: Union[int, None] = None,
-              options: RESET_OPTIONS_TYPING = None):
+              options: RESET_OPTIONS_TYPING = {}):
         """
         Reset the base environment (set the appropriate variables to correct initialization).
         It is (and must be) overloaded in other :class:`grid2op.Environment`
         """
         if self.__closed:
             raise EnvError("This environment is closed. You cannot use it anymore.")
-        if options is not None:
-            for el in options:
-                if el not in type(self).KEYS_RESET_OPTIONS:
-                    raise EnvError(f"You tried to customize the `reset` call with some "
-                                   f"`options` using the key `{el}` which is invalid. "
-                                   f"Only keys in {sorted(list(type(self).KEYS_RESET_OPTIONS))} "
-                                   f"can be used.")
+        for el in options:
+            if el not in type(self).KEYS_RESET_OPTIONS:
+                raise EnvError(f"You tried to customize the `reset` call with some "
+                                f"`options` using the key `{el}` which is invalid. "
+                                f"Only keys in {sorted(list(type(self).KEYS_RESET_OPTIONS))} "
+                                f"can be used.")
                     
         self.__is_init = True
         # current = None is an indicator that this is the first step of the environment