diff --git a/CHANGES b/CHANGES
index 25f3cb0b4e0..e1eb530acde 100644
--- a/CHANGES
+++ b/CHANGES
@@ -35,10 +35,10 @@ Bugs fixed
 * #9924: LaTeX: multi-line :rst:dir:`cpp:function` directive has big vertical
   spacing in Latexpdf
 * #10158: LaTeX: excessive whitespace since v4.4.0 for undocumented
-  variables/structure members 
+  variables/structure members
 * #10175: LaTeX: named footnote reference is linked to an incorrect footnote if
   the name is also used in the different document
-* #10188: LaTeX: alternating multiply referred footnotes produce a ``?`` in 
+* #10188: LaTeX: alternating multiply referred footnotes produce a ``?`` in
   pdf output
 * #10181: napoleon: attributes are displayed like class attributes for google
   style docstrings when :confval:`napoleon_use_ivar` is enabled
diff --git a/sphinx/texinputs/sphinxpackagefootnote.sty b/sphinx/texinputs/sphinxpackagefootnote.sty
index 6a7884f83bd..c6ebf9abbcf 100644
--- a/sphinx/texinputs/sphinxpackagefootnote.sty
+++ b/sphinx/texinputs/sphinxpackagefootnote.sty
@@ -12,7 +12,7 @@
 % - "savenotes" environment for wrapping environments, such as for tables
 %   which have problems with LaTeX footnotes
 % - hyperlinks
-% 
+%
 % Sphinx uses exclusively this mark-up for footnotes:
 % - \begin{footnote}[N]
 % - \begin{footnotetext}[N]
@@ -192,7 +192,7 @@
      \unrestored@protected@xdef\@thefnmark{\thempfn}%
     \endgroup
 % -- Sphinx specific:
-% currently commented out due to 
+% currently commented out due to
 % https://github.com/sphinx-doc/sphinx/pull/10191#issuecomment-1038807448
 % Memo: memoir class detection of successive footnote marks (to separate them
 %       by commas) is broken by \refstepcounter and also by \label, and some
@@ -200,7 +200,7 @@
       % \global\let\spx@saved@thefnmark\@thefnmark
       % % this is done to access robustly the page number where footnote mark is
       % \refstepcounter{sphinxfootnotemark}\label{footnotemark.\thesphinxfootnotemark}%
-      % % if possible, compare page numbers of mark and footnote to define \@thefnmark 
+      % % if possible, compare page numbers of mark and footnote to define \@thefnmark
       % \ltx@ifundefined{r@\thesphinxscope.footnote.#1}%
       % {}%                           one more latex run is needed
       % {\sphinx@xdef@thefnmark{#1}}% check of page numbers possible
@@ -418,7 +418,7 @@
     }%
   \H@@footnotemark
   \let\@makefnmark\spx@saved@makefnmark
-}%  
+}%
 \AtBeginDocument{%
    % let hyperref less complain
    \pdfstringdefDisableCommands{\def\sphinxfootnotemark [#1]{}}%