declaration shows "Bamberg, den" multiple times

On the "Declaration of Authorship" page, the "Bamberg, den" text before the space to sign is shown multiple times (see image)

This in cs-scrreprt.csl should fix it

\newcommand{\decl@signature}[1]{\par
  \vspace{15mm}\par
  #1 \rule[-1ex]{9em}{0.5pt}
  \hfill
  \begin{tabular}[t]{@{}c@{}}
  \rule[-1ex]{19em}{0.5pt}\\[1.5ex]
  {\theauthorname}
  \end{tabular}
  \hfill\mbox{}
  \par
}
\newcommand*{\decl@place}{}
\newenvironment{declaration}[1][Bamberg, den]{%
  \renewcommand*{\decl@place}{#1}
  \addchap{\@declaration}
}{\decl@signature{\decl@place}}