diff --git a/po/nl.po b/po/nl.po
index 989f7f8fc..4f80e0402 100644
--- a/po/nl.po
+++ b/po/nl.po
@@ -1302,7 +1302,7 @@ msgstr "nov"
 #. l10n: Short month name
 #: js/messages.php:176 libraries/common.lib.php:1560
 msgid "Dec"
-msgstr "Dec"
+msgstr "dec"
 
 #: js/messages.php:179
 msgid "Sunday"