diff --git a/po/nl.po b/po/nl.po
index 458f522d4..98ae1473e 100644
--- a/po/nl.po
+++ b/po/nl.po
@@ -1241,7 +1241,7 @@ msgstr "november"
 
 #: js/messages.php:150
 msgid "December"
-msgstr "December"
+msgstr "december"
 
 #. l10n: Short month name
 #: js/messages.php:154 libraries/common.lib.php:1538