Latex formatting with "A", "B" instead of 'Zero', 'One'

Question

I am using a folder system in latex where I have a folder for each chapter and appendix with their respective chapter.tex or appendix.tex files. I then include them in the main.tex file like:

%% APPENDICES %%
\appendix
\include{appendix/appendix1}
\include{appendix/appendix2}
\include{appendix/appendix3}
\include{appendix/appendix4}

In the appendix1.tex and the following appendix .tex files, I have the following:

\chapter{...some title...}
...some text...

The output however, is not how I want it. It outputs:

-------- Output : ---------

Appendix One
...some title...
...some text...

-------- I want : ---------

Appendix A
...some title...
...some text...

EDIT: I have figured out why it is behaving this way. I had the following package change the title format of my chapters:

% Make chapter numbers into string words 1 -> ONE
\usepackage{fmtcount}
\makeatletter
\renewcommand{\@makechapterhead}[1]{\vspace *{40\p@ }{\parindent \z@ 
\raggedright \normalfont \ifnum \c@secnumdepth >\m@ne \Huge \bfseries 
\@chapapp \space \Numberstring{chapter} \vskip 10\p@ \fi #1\par \nobreak \vskip 30\p@ }}
\makeatother

This causes "Appendix A" to turn into "Appendix One" and so on. I want to change this behaviour. Is there a way for me to undo this command at a specific place in the document?

Answer 1

Without any testing (you should provide a full but minimal example) you can probably get away with

\makeatletter
\let\normal@makechapterhead\@makechapterhead
\renewcommand{\@makechapterhead}[1]{\vspace *{40\p@ }{\parindent \z@ 
\raggedright \normalfont \ifnum \c@secnumdepth >\m@ne \Huge \bfseries 
\@chapapp \space \Numberstring{chapter} \vskip 10\p@ \fi #1\par \nobreak \vskip 30\p@ }}
\makeatother
...
\appendix
\makeatletter
 \let\@makechapterhead\normal@makechapterhead
\makeatother