diff --git a/Lib/_collections_abc.py b/Lib/_collections_abc.py
@@ -434,7 +434,7 @@ def __create_ga(cls, origin, args):
            raise TypeError(
                "Callable must be used as Callable[[arg, ...], result].")
        t_args, t_result = args
-        if isinstance(t_args, list):
            ga_args = tuple(t_args) + (t_result,)
        # This relaxes what t_args can be on purpose to allow things like
        # PEP 612 ParamSpec.  Responsibility for whether a user is using
@@ -456,6 +456,16 @@ def __reduce__(self):
            args = list(args[:-1]), args[-1]
        return _CallableGenericAlias, (Callable, args)


def _type_repr(obj):
    """Return the repr() of an object, special-casing types (internal helper).