diff --git a/po/bg.po b/po/bg.po
index 71022c5380..2e6f6badf6 100644
--- a/po/bg.po
+++ b/po/bg.po
@@ -1311,7 +1311,7 @@ msgstr "сряда"
 
 #: js/messages.php:190
 msgid "Thursday"
-msgstr ""
+msgstr "четвъртък"
 
 #: js/messages.php:191
 msgid "Friday"