diff --git a/core/i18n.php b/core/i18n.php
index 5bac4a099..1c01439d5 100755
--- a/core/i18n.php
+++ b/core/i18n.php
@@ -726,8 +726,8 @@ class i18n extends Object {
 		'om_ET' => array('Oromo', 'Afaan Oromo'),
 		'fa_IR' => array('Persian', 'فارسى'),
 		'pl_PL' => array('Polish', 'polski'),
-		'pt-PT' => array('Portuguese (Portugal)', 'português (Portugal)'),
-		'pt-BR' => array('Portuguese (Brazil)', 'português (Brazil)'),
+		'pt_PT' => array('Portuguese (Portugal)', 'português (Portugal)'),
+		'pt_BR' => array('Portuguese (Brazil)', 'português (Brazil)'),
 		'pa_IN' => array('Punjabi', 'ਪੰਜਾਬੀ'),
 		'qu_PE' => array('Quechua', 'Quechua'),
 		'rm_CH' => array('Romansh', 'rumantsch'),