diff --git a/po/ja.po b/po/ja.po
index 186de8b54..877715b96 100644
--- a/po/ja.po
+++ b/po/ja.po
@@ -1304,7 +1304,7 @@ msgstr "9 月"
 
 #: js/messages.php:155
 msgid "October"
-msgstr ""
+msgstr "10 月"
 
 #: js/messages.php:156
 msgid "November"