diff --git a/Doc/library/difflib.rst b/Doc/library/difflib.rst
index aa08988c8b3..10f8808d33b 100644
--- a/Doc/library/difflib.rst
+++ b/Doc/library/difflib.rst
@@ -79,7 +79,7 @@ diffs. For comparing directories and files, see also, the :mod:`filecmp` module.
 
    Lines beginning with '``?``' attempt to guide the eye to intraline differences,
    and were not present in either input sequence. These lines can be confusing if
-   the sequences contain tab characters.
+   the sequences contain whitespace characters, such as spaces, tabs or line breaks.
 
 
 .. class:: HtmlDiff
diff --git a/Misc/NEWS.d/next/Documentation/2021-04-01-08-09-34.bpo-43689.mqCfLe.rst b/Misc/NEWS.d/next/Documentation/2021-04-01-08-09-34.bpo-43689.mqCfLe.rst
new file mode 100644
index 00000000000..5cc13d7068c
--- /dev/null
+++ b/Misc/NEWS.d/next/Documentation/2021-04-01-08-09-34.bpo-43689.mqCfLe.rst
@@ -0,0 +1 @@
+The ``Differ`` documentation now also mentions other whitespace characters, which make it harder to understand the diff output.