Program name too long

Hello,
I'm using NSIS to create installers for some programs that I had to develop. The program's name are too long so they doesn't fit on welcome and finnish page.It looks awful🧟.
how can i make the box where "welcome to the installation of..." is displayed bigger?
Thanks
(Sorry for my english, I'm not a native speaker)

See MUI_WELCOMEPAGE_TITLE_3LINES in the MUI readme.

Thanks

It works great