diff --git a/app.py b/app.py
index 9bc80ea..8eaa0f3 100644
--- a/app.py
+++ b/app.py
@@ -178,7 +178,10 @@ class SplashScreen(wx.SplashScreen):
         if lang:
             #  print "LANG", lang, _, wx.Locale(), wx.GetLocale()
             import locale
-            locale.setlocale(locale.LC_ALL, '')
+            try:
+                locale.setlocale(locale.LC_ALL, '')
+            except locale.Error:
+                pass
             # For pt_BR, splash_pt.png should be used
             if (lang.startswith('pt')):
                 icon_file = "splash_pt.png"
diff --git a/invesalius/gui/language_dialog.py b/invesalius/gui/language_dialog.py
index 9d9d153..55538ab 100644
--- a/invesalius/gui/language_dialog.py
+++ b/invesalius/gui/language_dialog.py
@@ -56,7 +56,10 @@ class ComboBoxLanguage:
         # Find out OS locale
         self.os_locale = i18n.GetLocaleOS()
        
-        os_lang = self.os_locale[0:2]
+        try:
+            os_lang = self.os_locale[0:2]
+        except TypeError:
+            os_lang = None
 
         # Default selection will be English
         selection = self.locales_key.index('en')
@@ -70,7 +73,7 @@ class ComboBoxLanguage:
             # Add bitmap and info to Combo
             bitmapCmb.Append(dict_locales[key], bmp, key)
             # Set default combo item if available on the list
-            if key.startswith(os_lang):
+            if os_lang and key.startswith(os_lang):
                 selection = self.locales_key.index(key)
                 bitmapCmb.SetSelection(selection)
 
--
libgit2 0.21.2