chapterprefix=true and some lines later chapterprefix=false

[mysecondnameisdanger]

In my-thesis.tex...
I think false is the best option?

% **************************************************
% Document Class Definition
% **************************************************
\documentclass[%
    paper=A4,               % paper size --> A4 is default in Germany
    twoside=true,           % onesite or twoside printing
    openright,              % doublepage cleaning ends up right side
    parskip=half,           % spacing value / method for paragraphs
    **chapterprefix=true,**     % prefix for chapter marks
    11pt,                   % font size
    headings=normal,        % size of headings
    bibliography=totoc,     % include bib in toc
    listof=totoc,           % include listof entries in toc
    titlepage=on,           % own page for each title page
    captions=tableabove,    % display table captions above the float env
    **chapterprefix=false,**    % do not display a prefix for chapters
    appendixprefix=false,    % but display a prefix for appendix chapter
    draft=false,            % value for draft version
]{scrreprt}%