diff --git a/mozilla/mail/locales/all-locales b/mozilla/mail/locales/all-locales
index 0307a8c1a4f..1f6555d483d 100644
--- a/mozilla/mail/locales/all-locales
+++ b/mozilla/mail/locales/all-locales
@@ -17,6 +17,7 @@ it
 ja
 ja-JP-mac
 ko
+mk
 nb-NO
 nl
 pa-IN