diff --git a/po/zh_TW.po b/po/zh_TW.po
index 8d17354b48..9eae5b1abc 100644
--- a/po/zh_TW.po
+++ b/po/zh_TW.po
@@ -1454,10 +1454,9 @@ msgstr "日"
 
 #. l10n: Minimal week day name
 #: js/messages.php:224
-#, fuzzy
 #| msgid "Mon"
 msgid "Mo"
-msgstr "Mon"
+msgstr "一"
 
 #. l10n: Minimal week day name
 #: js/messages.php:226