diff --git a/po/sl.po b/po/sl.po
index 4092729d3f..f8ed136b5d 100644
--- a/po/sl.po
+++ b/po/sl.po
@@ -175,7 +175,7 @@ msgstr "mar"
 
 #: libraries/messages.inc.php:28
 msgid "Apr"
-msgstr "Apr"
+msgstr "apr"
 
 #: libraries/messages.inc.php:28
 msgid "May"