diff --git a/po/bg.po b/po/bg.po
index 15ddb14822..c15d882565 100644
--- a/po/bg.po
+++ b/po/bg.po
@@ -1037,7 +1037,7 @@ msgstr "Изтриване на колона"
 
 #: js/messages.php:67
 msgid "Adding Primary Key"
-msgstr ""
+msgstr "Добавяне на първичен ключ"
 
 #: js/messages.php:68 libraries/relation.lib.php:87 pmd_general.php:386
 #: pmd_general.php:543 pmd_general.php:591 pmd_general.php:667