diff --git a/Doc/c-api/unicode.rst b/Doc/c-api/unicode.rst
index 059a7ef399ae0f..401c99ebeb0fec 100644
--- a/Doc/c-api/unicode.rst
+++ b/Doc/c-api/unicode.rst
@@ -762,7 +762,7 @@ APIs:
    The string must not have been “used” yet.
    See :c:func:`PyUnicode_New` for details.
 
-   Return the number of written character, or return ``-1`` and raise an
+   Return the number of written characters, or return ``-1`` and raise an
    exception on error.
 
    .. versionadded:: 3.3
@@ -1174,7 +1174,7 @@ These are the UTF-8 codec APIs:
    .. versionadded:: 3.3
 
    .. versionchanged:: 3.7
-      The return type is now ``const char *`` rather of ``char *``.
+      The return type is now ``const char *`` rather than ``char *``.
 
    .. versionchanged:: 3.10
       This function is a part of the :ref:`limited API <limited-c-api>`.
@@ -1196,7 +1196,7 @@ These are the UTF-8 codec APIs:
    .. versionadded:: 3.3
 
    .. versionchanged:: 3.7
-      The return type is now ``const char *`` rather of ``char *``.
+      The return type is now ``const char *`` rather than ``char *``.
 
 
 UTF-32 Codecs
diff --git a/Doc/whatsnew/3.15.rst b/Doc/whatsnew/3.15.rst
index 0f7782ba1813d1..fb0755e8ffec5b 100644
--- a/Doc/whatsnew/3.15.rst
+++ b/Doc/whatsnew/3.15.rst
@@ -798,7 +798,7 @@ Other language changes
               n = buffer.find(b'\n')
               data = bytes(buffer[:n + 1])
               del buffer[:n + 1]
-              assert data == b'abc'
+              assert data == b'abc\n'
               assert buffer == bytearray(b'def')
 
         - .. code:: python