diff --git a/po/sl.po b/po/sl.po
index 83ddb16350..4092729d3f 100644
--- a/po/sl.po
+++ b/po/sl.po
@@ -171,7 +171,7 @@ msgstr "feb"
 
 #: libraries/messages.inc.php:28
 msgid "Mar"
-msgstr "Mar"
+msgstr "mar"
 
 #: libraries/messages.inc.php:28
 msgid "Apr"