diff --git a/po/zh_TW.po b/po/zh_TW.po
index a9fdb5a5df..b3ae1f21fb 100644
--- a/po/zh_TW.po
+++ b/po/zh_TW.po
@@ -1411,7 +1411,7 @@ msgstr "星期六"
 #. l10n: Short week day name
 #: js/messages.php:206 libraries/common.lib.php:1594
 msgid "Sun"
-msgstr "日"
+msgstr "週日"
 
 #. l10n: Short week day name
 #: js/messages.php:208 libraries/common.lib.php:1596