qTranslate remove default directory from link

/ru - default directory, how can I remove it

this link: https://cambridge.ua/ru/teachers/ should be: https://cambridge.ua/teachers/

ul class="language-chooser language-chooser-text 
qtranxs_language_chooser" id="qtranslate-chooser"
    li class="lang-ru active"a href="https://cambridge.ua/ru/teachers/" 
hreflang="ru" title="RU (ru)" class="qtranxs_text qtranxs_text_ru"
spanRU/span/a/li
    li class="lang-en"a href="https://cambridge.ua/en/teachers/" 
hreflang="en" title="EN (en)" class="qtranxs_text qtranxs_text_en"
spanEN/span/a/li
    li class="lang-uk"a href="https://cambridge.ua/uk/teachers/" 
hreflang="uk" title="UK (uk)" class="qtranxs_text qtranxs_text_uk"
spanUK/span/a/li
/ul
div class="qtranxs_widget_end"/div