diff --git a/po/nl.po b/po/nl.po
index 09d635914..c0709af71 100644
--- a/po/nl.po
+++ b/po/nl.po
@@ -1229,7 +1229,7 @@ msgstr "augustus"
 
 #: js/messages.php:147
 msgid "September"
-msgstr "September"
+msgstr "september"
 
 #: js/messages.php:148
 msgid "October"