For some unknown reason I prefer to write the page numbers in \autocite[34,79]{dR80} without a space behind the comma. Unfortunately, in the output it doesnt compile a space automatically. Is there a way to change the command in order to set one space behind a comma?
Edit1 (adding a MWE):
\documentclass{article}
\usepackage[ngerman]{babel}%dt.Silbentrennung
\usepackage[style=authortitle-icomp,autocite=footnote]{biblatex}
\bibliography{TestLit}
\begin{document}
\autocite[34,39]{dR80a}
\end{document}
Where dR80a is the following bib entry.
@article{dR80a,
author = {David~E. Rumelhart},
title = {On Evaluating Story Grammars},
journal = {Cognitive Science},
pages = {313-316},
year = {1980},
volume = {4},
}
The output you find here.

Preferably the page numbers would look like this: 34, 39 e.g. with a space behind the comma.