diff --git a/lark/parse_tree_builder.py b/lark/parse_tree_builder.py
index e3a4171..1acad4d 100644
--- a/lark/parse_tree_builder.py
+++ b/lark/parse_tree_builder.py
@@ -320,7 +320,7 @@ def inplace_transformer(func):
 
 def apply_visit_wrapper(func, name, wrapper):
     if wrapper is _vargs_meta or wrapper is _vargs_meta_inline:
-        raise NotImplementedError("Meta args not supported for internal transformer")
+        raise NotImplementedError("Meta args not supported for internal transformer; use YourTransformer().transform(parser.parse()) instead")
 
     @wraps(func)
     def f(children):
diff --git a/lark/visitors.py b/lark/visitors.py
index 0e051ed..b6db3ea 100644
--- a/lark/visitors.py
+++ b/lark/visitors.py
@@ -523,7 +523,7 @@ def v_args(inline: bool = False, meta: bool = False, tree: bool = False, wrapper
 
     Parameters:
         inline (bool, optional): Children are provided as ``*args`` instead of a list argument (not recommended for very long lists).
-        meta (bool, optional): Provides two arguments: ``meta`` and ``children`` (instead of just the latter)
+        meta (bool, optional): Provides two arguments: ``meta`` and ``children`` (instead of just the latter); ``meta`` isn't available for transformers supplied to Lark using the ``transformer`` parameter (aka internal transformers).
         tree (bool, optional): Provides the entire tree as the argument, instead of the children.
         wrapper (function, optional): Provide a function to decorate all methods.