diff --git a/src/common/i18n.py b/src/common/i18n.py
index 16a452a57..29c99bf8e 100644
--- a/src/common/i18n.py
+++ b/src/common/i18n.py
@@ -37,17 +37,13 @@ else:
 # according to the environment variables
 locale.setlocale(locale.LC_ALL, '')
 
-## Add, if needed, a value in LANG environmental variable ##
-# get LANG, fallback to ''; LANG can be 'en_US:el_GR.UTF-8:fr_FR'
-lang = os.environ.get('LANG', '')
-default_loc = locale.getdefaultlocale()[0] # en_US, fr_FR, el_GR etc..
-# is the default locale a value of LANG?
-if default_loc and default_loc not in lang.split(':'):
-	# no, add it!
-	if lang == '':
-		lang = default_loc
-	else:
-		lang += ':' + default_loc
+## Set, if needed, a value in LANG environmental variable ##
+# get LANG, fallback to ''
+lang = os.environ.get('LANG')
+if not lang:
+	default_lang = locale.getdefaultlocale()[0] # en_US, fr_FR, el_GR etc..
+	if default_lang:
+		lang = default_lang
 
 if lang:
 	os.environ['LANG'] = lang