[Plugin: Qtranslate Slug] Order of qtranslate flags

Hi guys,
after I mofified the language selector to make the Qtranslate slug plugin working, the flags are not in order now: I would like them to be displayed in this order: english flag, italian, french… How can I change this order? Anyone can help me ? On which file/directory/code have I to work?

Here is the link of my site:

https://www.pruneta.com

https://www.ads-software.com/extend/plugins/qtranslate-slug/