[Tex/LaTex] ToC figures and text overlap

table of contents

I am using XeLaTeX and memoir to write a longer text with several parts, chapters and sections. When printing the \tableofcontents I get a spacing problem with 2-figure numbers almost overlapping the relevant section name, as per enclosed picture. I am aware that
the memoir manual has a section dedicated to this theme, but the most part of it is doubledutch to me. Is there any easy way to avoid this problem?

A partial view of my ToC

Best Answer

You may want to say something like


or even 1em: experiment with the added width. The code should go in the preamble.

The relevant section in the manual is 9.2.2