[Tex/LaTex] Strange behaviour of \closing in koma-script scrlttr2 class

Question

I'm having some trouble with the command \closing{\closingphrase}.

If \closingphrase is longer (e.g. 'Met vriendelijke groet'), the closing phrase is aligned left and the signature is indented.
This is the correct placing of the elements which conforms to the example in the Koma-script manual.

But if \closingphrase is relatively short (e.g. 'Hoogachtend'), the closing phrase is indented and the signature is aligned left, which looks very strange.

As it is customary in Dutch to end a formal letter with 'Hoogachtend' I'd like to prevent this from happening.

Can anyone explain this behaviour and help me prevent it?

Example of strange alignment

\documentclass[DIN,paper=a4,fontsize=11pt]{scrlttr2}

\usepackage[dutch]{babel}

\def\afzender{Richard Kranendonk}
\def\ondertekening{Cheers}
\setkomavar{signature}{\afzender}

\begin{document}
\begin{letter}

Dear Sir,

This is a minimal test letter. 

\closing{\ondertekening,}
\end{letter}
\end{document}

Answer 1

Marco Daniel already showed how to modify the behaviour of scrlttr2. The default behaviour is explained in section 21.1.7 of the KOMA-Script manual:

Closing phrase and signature will be typeset in a box. The width of the box is determined by the length of the longest line of the closing phrase or signature.

In other words, the closing phrase will be indented not if it is "relatively short", but if the phrase plus the appended comma is shorter than the signature.