diff --git a/Doc/using/cmdline.rst b/Doc/using/cmdline.rst
index 49fe3a0..dfe73bc 100644
--- a/Doc/using/cmdline.rst
+++ b/Doc/using/cmdline.rst
@@ -300,8 +300,7 @@ Miscellaneous options
 
    Force the binary layer of the stdout and stderr streams (which is
    available as their ``buffer`` attribute) to be unbuffered. The text I/O
-   layer will still be line-buffered if writing to the console, or
-   block-buffered if redirected to a non-interactive file.
+   layer will still be line-buffered.
 
    See also :envvar:`PYTHONUNBUFFERED`.