[Tex/LaTex] scrbook page numbers margin problem

Question

I was looking for the setting to adjust the vertical margin of the page numbers in the scrbook class but haven't found anything. I want to have them "nearer" to the page margin.

\documentclass[oneside,ngerman]{scrbook}
\begin{document}
Some text
\end{document}

Answer 1

(OP's answer, moved from question)

Edit: The following code does the trick (following Marco's advise). Change 10em to whatever you want.

\usepackage[bottom=10em]{geometry}