diff --git a/stdlib/3/os/__init__.pyi b/stdlib/3/os/__init__.pyi
index 5e36cc14d..1b4b3c7b0 100644
--- a/stdlib/3/os/__init__.pyi
+++ b/stdlib/3/os/__init__.pyi
@@ -393,7 +393,7 @@ if sys.platform != 'win32':
     def readv(fd: int, buffers: Sequence[bytearray]) -> int: ...
     def writev(fd: int, buffers: Sequence[bytes]) -> int: ...
 
-class terminal_size(NamedTuple):
+class terminal_size(Tuple[int, int]):
     columns: int
     lines: int
 def get_terminal_size(fd: int = ...) -> terminal_size: ...