diff --git a/invesalius/gui/language_dialog.py b/invesalius/gui/language_dialog.py
index 952856d..c089ec7 100644
--- a/invesalius/gui/language_dialog.py
+++ b/invesalius/gui/language_dialog.py
@@ -54,7 +54,7 @@ class ComboBoxLanguage:
         self.locales = sorted(self.locales)
        
         # Retrieve locales keys (eg: pt_BR for Portuguese(Brazilian))
-        self.locales_key = [dict_locales.get_key(value)[0] for value in self.locales]
+        self.locales_key = [dict_locales.get_key(value) for value in self.locales]
 
         # Find out OS locale
         self.os_locale = i18n.GetLocaleOS()
--
libgit2 0.21.2