# Title in ToC is Overwritten

In memoir class I define \titleformat{\section} {\normalfont\large\upshape\bfseries\color{bleudefrance!80}}{ЧАСТИНА,,\arabic{section}.}{0.5em}{}

and

\renewcommand\thesection{ЧАСТИНА.\arabic{section}~}

In the text of the document this works, each section is numbered "ЧАСТИНА No. TEXT" But in the Toc "TEXT" overwrites "ЧАСТИНА No." it seems that there is a predefined length for the title in Toc smaller than "ЧАСТИНА No." which I am not able to change

• Instead of two commands and some description, could you turn this into a MWE that specifically shows the problem? This will save a lot of work for everyone wanting to reproduce your problem. – Teepeemm Aug 3 '20 at 17:02
• As always on this site please post a full minimal example instead, then others can easily copy and test your code and hopefully get an idea of want you want and what is currently wrong – daleif Aug 3 '20 at 19:11
• And don't use titlesec (I assume) with memoir, memoir has its own system and titlesec is not compatible with it – daleif Aug 3 '20 at 19:12