diff --git a/mozilla/calendar/locales/shipped-locales b/mozilla/calendar/locales/shipped-locales
index 5e48dfb53c8..5e27428043c 100644
--- a/mozilla/calendar/locales/shipped-locales
+++ b/mozilla/calendar/locales/shipped-locales
@@ -17,6 +17,7 @@ lt
 mk
 nb-NO
 nl
+nn-NO
 pl
 pt-BR
 pt-PT