diff --git a/stdlib/_typeshed/__init__.pyi b/stdlib/_typeshed/__init__.pyi
index c37d55a7d..f32224401 100644
--- a/stdlib/_typeshed/__init__.pyi
+++ b/stdlib/_typeshed/__init__.pyi
@@ -298,9 +298,6 @@ class SupportsGetItemBuffer(SliceableBuffer, IndexableBuffer, Protocol):
 
 class SizedBuffer(Sized, Buffer, Protocol): ...
 
-# for compatibility with third-party stubs that may use this
-_BufferWithLen: TypeAlias = SizedBuffer  # not stable  # noqa: Y047
-
 ExcInfo: TypeAlias = tuple[type[BaseException], BaseException, TracebackType]
 OptExcInfo: TypeAlias = ExcInfo | tuple[None, None, None]
 
diff --git a/stubs/python-xlib/Xlib/protocol/display.pyi b/stubs/python-xlib/Xlib/protocol/display.pyi
index 1808ea600..04f7be303 100644
--- a/stubs/python-xlib/Xlib/protocol/display.pyi
+++ b/stubs/python-xlib/Xlib/protocol/display.pyi
@@ -1,4 +1,4 @@
-from _typeshed import _BufferWithLen
+from _typeshed import SizedBuffer
 from socket import socket
 from typing import Literal, TypeVar, overload
 
@@ -16,7 +16,7 @@ class bytesview:
     @overload
     def __init__(self, data: bytes | bytesview, offset: int, size: int) -> None: ...
     @overload
-    def __init__(self, data: _BufferWithLen, offset: int = 0, size: int | None = None) -> None: ...
+    def __init__(self, data: SizedBuffer, offset: int = 0, size: int | None = None) -> None: ...
     @overload
     def __getitem__(self, key: slice) -> bytes: ...
     @overload