diff --git a/po/sv.po b/po/sv.po
index 69f4734c5..ea7455bbc 100644
--- a/po/sv.po
+++ b/po/sv.po
@@ -1273,7 +1273,7 @@ msgstr "november"
 
 #: js/messages.php:140
 msgid "December"
-msgstr ""
+msgstr "december"
 
 #. l10n: Short month name
 #: js/messages.php:144 libraries/common.lib.php:1538